Light source assembly with multiple, disparate light sources

ABSTRACT

A light source assembly for use by a user includes a housing assembly and a moving beam light source. The moving beam light source is positioned substantially within the housing assembly. The moving beam light source generates a source output beam that is directed away from the housing assembly at an angle relative to a rotation axis as a moving output beam while being rotated about the rotation axis. The moving beam light source is a non-visible light source that generates the source output beam having a center wavelength that is outside a visible light spectrum.

RELATED APPLICATIONS

This application is a continuation-in-part of U.S. application Ser. No.15/783,928 filed on Oct. 13, 2017, and entitled “LIGHT SOURCE ASSEMBLYWITH MULTIPLE, DISPARATE LIGHT SOURCES”, which is currently pending.Additionally, U.S. application Ser. No. 15/783,928 is acontinuation-in-part of U.S. application Ser. No. 14/522,290 filed onOct. 23, 2014, and entitled “LIGHT SOURCE ASSEMBLY WITH MULTIPLE,DISPARATE LIGHT SOURCES”, now issued U.S. Pat. No. 9,791,113. Further,U.S. application Ser. No. 14/522,290 claims priority on U.S. ProvisionalApplication Ser. No. 61/894,812, filed Oct. 23, 2013 and entitled “LIGHTSOURCE ASSEMBLY WITH MULTIPLE, DISPARATE LIGHT SOURCES”. As far aspermitted, the contents of U.S. application Ser. Nos. 15/783,928 and14/522,290, and U.S. Provisional Application Ser. No. 61/894,812 areincorporated in their entirety herein by reference.

BACKGROUND

A signal beacon or flashlight can be utilized in conjunction with adetector assembly for various purposes in a military environment and ina civilian environment, and on land or in a maritime environment. Forexample, a signal beacon or flashlight can be utilized in conjunctionwith a detector assembly for purposes of search and rescue,identification (e.g., of friend or foe), surveillance, targeting, and/ornavigation, both on land and/or in a maritime environment. There is anongoing desire to improve the capabilities of a signal beacon orflashlight that can be used for such applications.

SUMMARY

The present invention is directed toward a light source assembly for useby a user. In various embodiments, the light source assembly includes ahousing assembly and a moving beam light source. The moving beam lightsource is positioned substantially within the housing assembly. Themoving beam light source generates a source output beam that is directedaway from the housing assembly at an angle relative to a rotation axisas a moving output beam while being rotated about the rotation axis. Themoving beam light source is a non-visible light source that generatesthe source output beam having a center wavelength that is outside avisible light spectrum.

In some embodiments, the housing assembly includes a housing axis. Insuch embodiments, the rotation axis can be substantially coaxial withand/or substantially parallel to the housing axis.

In certain embodiments, the moving beam light source is an infraredlight source that generates the source output beam so that the centerwavelength of the source output beam is within an infrared lightspectrum. More particularly, in one such embodiment, the moving beamlight source is mid-infrared wavelength light source that generates thesource output beam so that the center wavelength of the source outputbeam is within a mid-infrared wavelength range of between approximatelythree micrometers and eight micrometers.

Additionally, in some embodiments, the light source assembly furtherincludes a moving beam optical assembly including a movable opticalelement that is moved by a mover to rotate about the rotation axis. Insuch embodiments, the source output beam impinges on the movable opticalelement so that the moving output beam is directed away from the housingassembly at an angle relative to the rotation axis while being rotatedabout the rotation axis. Further, the mover can include a mover shaftthat defines a shaft cavity therein. In such embodiment, the sourceoutput beam is directed from the moving beam light source through theshaft cavity before the source output beam impinges on the movableoptical element.

In certain embodiments, the light source assembly further includes aplurality of fixed beam light sources that each generate a fixed outputbeam that is directed away from the housing assembly in a differentaxial direction. In some such embodiments, each fixed output beam isangularly spaced apart from adjacent fixed output beams by at leastapproximately sixty degrees. Additionally, each of the plurality offixed beam light sources can be a non-visible light source thatgenerates the fixed output beam having a center wavelength that isoutside a visible light spectrum of between approximately three hundredeighty and seven hundred nanometers. More particularly, in someembodiments, at least one of the plurality of fixed beam light sourcesis an infrared light source that generates the fixed output beam so thatthe center wavelength of the moving output beam is within an infraredlight spectrum. Further, at least one of the plurality of fixed beamlight sources can be near-infrared wavelength light source thatgenerates the fixed output beam so that the center wavelength of thefixed output beam is within a near-infrared wavelength range of betweenapproximately seven hundred nanometers and one point four micrometers.

In some embodiments, the light source assembly further includes atemperature control assembly that is coupled to the housing assembly,the temperature control assembly being configured to dissipate heat thatis generated during use of the light source assembly.

Additionally, in some embodiments, the present invention is alsodirected toward a light source assembly for use by a user, the lightsource assembly including (i) a housing assembly; (ii) a moving beamlight source that is positioned substantially within the housingassembly, the moving beam light source generating a source output beamthat is directed away from the housing assembly at an angle relative toa rotation axis as a moving output beam while being rotated about therotation axis; (iii) a moving beam optical assembly including a movableoptical element that is configured to rotate about the rotation axis,the source output beam impinging on the movable optical element so thatthe moving output beam is directed away from the housing assembly at anangle relative to the rotation axis while being rotated about therotation axis; and (iv) a mover that rotates the movable optical elementabout the rotation axis, the mover including a mover shaft that definesa shaft cavity therein; and wherein the source output beam is directedfrom the moving beam light source through the shaft cavity before thesource output beam impinges on the movable optical element.

Further, in certain applications, the present invention is directedtoward a light source assembly for use by a user, the light sourceassembly including (i) a housing assembly; (ii) a first set of disparatelight sources that is coupled to the housing assembly; and (iii) asecond set of disparate light sources that is coupled to the housingassembly; wherein each of the sets of disparate light sources includes afirst light source that is configured to generate a first light beamhaving a first center wavelength and a second light source that isconfigured to generate a second light beam having a second centerwavelength that is different than the first center wavelength; whereinthe first set of disparate light sources generates at least one firstoutput beam that is directed away from the housing assembly along andabout a first central beam axis; and wherein the second set of disparatelight sources generates at least one second output beam that is directedaway from the housing assembly along and about a second central beamaxis; wherein the first central beam axis is angularly spaced apart fromthe second central beam axis.

It should be understood that although a number of different embodimentsof a light source assembly are illustrated and described herein below,one or more features of any one embodiment can be combined with one ormore features of one or more of the other embodiments, provided thatsuch combination satisfies the intent of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The novel features of this invention, as well as the invention itself,both as to its structure and its operation, will be best understood fromthe accompanying drawings, taken in conjunction with the accompanyingdescription, in which similar reference characters refer to similarparts, and in which:

FIG. 1A is a simplified front perspective view of an embodiment of alight source assembly having features of the present invention;

FIG. 1B is a simplified rear perspective view of the light sourceassembly of FIG. 1A;

FIG. 1C is a simplified top perspective view of the light sourceassembly of FIG. 1A;

FIG. 1D is a simplified rear perspective view of a portion of the lightsource assembly of FIG. 1A;

FIG. 1E is a simplified front perspective view of a portion of the lightsource assembly of FIG. 1A;

FIG. 1F is a simplified front perspective view of a portion of the lightsource assembly of FIG. 1A;

FIG. 1G is a simplified side perspective view of a portion of the lightsource assembly of FIG. 1A;

FIG. 1H is a simplified side perspective view of a portion of the lightsource assembly of FIG. 1A;

FIG. 2A is a simplified front perspective view of another embodiment ofa light source assembly having features of the present invention;

FIG. 2B is a simplified side perspective view of the light sourceassembly of FIG. 2A;

FIG. 2C is a front perspective view of a portion of the light sourceassembly of FIG. 2A;

FIG. 3 is a simplified schematic front perspective view of a portion ofstill another embodiment of a light source assembly having features ofthe present invention;

FIGS. 4A-4F are simplified graphical illustrations of current and outputfor various selector settings of the light source assembly of FIG. 1A;

FIG. 5 is a simplified schematic perspective view illustration ofanother embodiment of the light source assembly;

FIG. 6A is a simplified schematic perspective view illustration of aportion of the light source assembly illustrated in FIG. 5;

FIG. 6B is another simplified schematic perspective view illustration ofthe portion of the light source assembly illustrated in FIG. 6A;

FIG. 6C is an exploded view illustration of the portion of the lightsource assembly illustrated in FIG. 6A;

FIG. 6D is a cutaway view of the portion of the light source assemblytaken on line D-D in FIG. 6A;

FIG. 6E is a simplified schematic perspective view illustration ofanother portion of the light source assembly illustrated in FIG. 5;

FIG. 7A is a simplified schematic perspective view illustration of aportion of another embodiment of the light source assembly;

FIG. 7B is another simplified schematic perspective view illustration ofthe portion of the light source assembly illustrated in FIG. 7A;

FIG. 8 is a simplified schematic illustration of a maritime vehicle withthe light source assembly mounted thereon;

FIG. 9A is a simplified schematic perspective view illustration of aportion of still yet another embodiment of the light source assembly;

FIG. 9B is another simplified schematic perspective view illustration ofthe portion of the light source assembly illustrated in FIG. 9A;

FIG. 9C is still another simplified schematic perspective viewillustration of the portion of the light source assembly illustrated inFIG. 9A;

FIG. 9D is a simplified schematic top view illustration of the portionof the light source assembly illustrated in FIG. 9A; and

FIG. 9E is a cutaway view of the portion of the light source assemblytaken on line E-E in FIG. 9D.

DESCRIPTION

Embodiments of the present invention are described herein in the contextof a light source assembly with multiple, disparate light sources. Moreparticularly, in various embodiments, the light source assembly can beutilized in conjunction with a detector assembly for various purposesand in various environments, e.g., in military or civilian environments,and on land or in maritime environments. Additionally, in certainapplications, the light source assembly can be utilized in conjunctionwith the detector assembly regardless of the position of the detectorassembly relative to the light source assembly.

Those of ordinary skill in the art will realize that the followingdetailed description of the present invention is illustrative only andis not intended to be in any way limiting. Other embodiments of thepresent invention will readily suggest themselves to such skilledpersons having the benefit of this disclosure. Reference will now bemade in detail to implementations of the present invention asillustrated in the accompanying drawings.

In the interest of clarity, not all of the routine features of theimplementations described herein are shown and described. It will, ofcourse, be appreciated that in the development of any such actualimplementation, numerous implementation-specific decisions must be madein order to achieve the developer's specific goals, such as compliancewith application-related and business-related constraints, and thatthese specific goals will vary from one implementation to another andfrom one developer to another. Moreover, it will be appreciated thatsuch a development effort might be complex and time-consuming, but wouldnevertheless be a routine undertaking of engineering for those ofordinary skill in the art having the benefit of this disclosure.

FIG. 1A is a simplified front perspective view of an embodiment of alight source assembly 10 having features of the present invention. Thedesign of the light source assembly 10 can be varied to suit thespecific requirements and intended uses of the light source assembly 10.As illustrated, in various embodiments, the light source assembly 10includes a housing assembly 12, a plurality of disparate light sources14, an optical assembly 16, a controller 18 or circuit board(illustrated in FIG. 1D), a power source 20 (illustrated in FIG. 1E),and a selector assembly 22, e.g., a switch or dial. Alternatively, thelight source assembly 10 can be designed with more or fewer componentsthan those specifically illustrated and described in this embodiment.For example, in one such alternative embodiment, the light sourceassembly 10 can be designed without the optical assembly 16.

As an overview, the present invention is directed to a light sourceassembly 10 that can be used as a beacon or flashlight for variouspurposes, in conjunction with a detector assembly 23 (illustrated as abox). For example, in various applications, the light source assembly 10can be used with the detector assembly 23 for purposes ofidentification, surveillance, search and rescue, targeting, navigationand/or communication. In certain embodiments, the detector assembly 23can be a camera that is adapted to selectively detect one or more of theplurality of disparate light sources 14. Moreover, in some embodiments,as discussed herein below, the selector assembly 22 can be manuallyoperated by a user so as to allow the user to select from variouspossible selector settings, and thus various possible modes ofoperation, based on the needs of the user at any given time.

As utilized herein, it should be appreciated that the combination of thelight source assembly 10 and the detector assembly 23 can be referred togenerally as an “operational assembly”. During use of the operationalassembly 25, the light source assembly 10 is utilized such that any andall of the plurality of disparate light sources 14 can be selectivelyactivated, and the detector assembly 23 is utilized to selectivelydetect output beams from each of the plurality of disparate lightsources 14.

In one application, for identification, e.g., in military operations, itis important to be able to quickly and accurately identify anyindividual, group, vehicle or device as friend or foe. In thisapplication, the individuals or groups (e.g., soldiers), vehicles and/ordevices could have light source assemblies 10 that can utilize thedisparate light sources 14 alternatively and/or at specificallydesignated pulse rates (i.e. the light source assembly 10 is fullyprogrammable such that the disparate light sources 14 can be coded inany suitable or desired manner) to identify the owner as friendly.Conversely, absence of and/or non-properly coded usage of such lightsource assemblies 10 can be interpreted as the owner being a foe.Additionally, in such applications, the light source assembly 10 can behandheld, uniform-mounted, helmet-mounted, and/or mounted on a portionof the vehicle or device. Moreover, the light source assembly 10 can bepointed (similar to a flashlight) to identify something.

In another application, a person in charge of the command and control ofa battlefield will want to keep track of the relative positions ofpeople and military equipment. As provided herein, each person or eachpiece of military equipment can include a light source assembly 10 thatis controlled to selectively activate disparate light sources 14 and/orpulse the light sources 14 at a different rate (coded in any suitable ordesired manner). In such application, the different light sources 14and/or different pulse rates can be recognized to locate andindividually identify the location of multiple assets based on thesequence of the pulsing of the beams of the light sources using adetector assembly 23 that captures images of the battlefield.

In still another application, i.e. for surveillance, one or more lightsource assemblies 10 could be used to define a search area for thedetector assembly 23. In this application, something moving in front ofthe light source assembly 10 would result in a disappearance of signalthat could be used to trigger an event, much like near-infrared diodesare used in applications such as making sure that the path is clearbefore closing a garage door.

In yet another application, i.e. for use in search and rescueoperations, life rafts, life vests, or soldiers' kits could all includeone or more light source assemblies 10 that could be activated in anemergency. In such application, the emitted signal from the light sourceassembly 10 would allow easier, faster and more accurate spotting withthe detector assembly 23, and could also be invisible to hostile forcesif the emitted and detected light sources 14 are not widely used.Additionally, in this application, the light sources 14 can be viewedday and night, and in inclement conditions for search and rescueoperations.

In another alternative application, i.e. for targeting, a light sourceassembly 10 could be placed on a target of interest surreptitiously, andleft operating for later targeting with a detector assembly 23.

In still another alternative application, i.e. for navigation, one ormore light source assemblies 10 can be used to help navigate inconditions such as dust and fog, and/or when normal visibility may beotherwise impaired. In this application, multiple light sourceassemblies 10 could be used to define roads or runways.

In still yet another application, i.e. for use in a maritimeenvironment, one or more light source assemblies 10 can be mounted onany size boat or ship (or other suitable maritime vehicle) for use inany of the above-noted applications. For example, in alternativeapplications in the maritime environment, the one or more light sourcescan be used for identification purposes, asset command and control,surveillance, search and rescue operations, targeting and/or navigation.

Additionally, it is understood that the light source assembly 10 can beutilized on or in conjunction with any suitable type of vehicle. Forexample, in addition to the maritime vehicles noted above, in certainnon-exclusive alternative applications, the light source assembly 10 canalso be used on or in conjunction with a ground vehicle (e.g., car,truck, bus, tank, etc.), an air vehicle (e.g., helicopter, fixed-wingaircraft, etc.), or another suitable type of vehicle.

As provided herein, in various applications, any information can becoded in the beacon signal emitted by the light source assembly 10 byadjusting the specific light sources 14 that are activated at any giventime and/or the pulse rate of the light sources 14 of the light sourceassembly 10. Stated in another manner, the light source assembly 10 canbe fully programmable to selectively activate any and all of the lightsources 14 in any desired manner. For example, in one non-exclusiveapplication, the pulse rate of the light sources 14 can be adjusted toprovide a message in Morse code. Additionally, in certain embodiments,the length and timing of each pulse can be long enough to be effectivelycaptured by the detector assembly 23. For example, each pulse can belonger than the exposure time of the detector assembly 23 to make surethe pulse is captured by the detector assembly 23. Further, in oneembodiment, the pulse rate of the light source assembly 10 can besynchronized with the capture rate of the detector assembly 23. Withthis design, the light source assembly 10 can be controlled to generatethe desired light beam(s) while the detector assembly 23 is capturingsuch light. As one example, the detector assembly 23 can emit a signal(e.g., a RF signal) that is received by the light source assembly 10 tosynchronize them. Alternatively, the detector assembly 23 and one ormore of the light source assemblies 10 can be synchronized prior to thebeginning of the operation. Still alternatively, the detector assembly23 and the light source assemblies 10 can receive a signal from a GPSthat can be used to synchronize the devices.

It should be noted that either physical, inductive, or radio frequencysignals can be used to program the coding of pulses (pulse width, pulserate, pulse repetition, Morse, etc.) of any of the light sources 14.

Additionally, in certain embodiments, the light source assembly 10 isdesigned to be small, portable, lightweight, stable, rugged, easy tomanufacture, reliable, efficient for longer use of the power source 20,and relatively inexpensive to manufacture. Further, the light sourceassembly 10 is further designed to be usable at sufficient distancesthat the signals can be detected from outside a danger zone, e.g., incertain applications, the light source assembly 10 can have a range ofgreater than three kilometers. As a result thereof, the light sourceassembly 10 can be used in many applications, such as those specificallynoted above, as a signal beacon or flashlight.

The housing assembly 12 retains various components of the light sourceassembly 10. For example, in certain embodiments, the plurality ofdisparate light sources 14, the optical assembly 16, the controller 18,the power source 20 and the selector assembly 22 can all be coupled to,secured to, and/or retained substantially within the housing assembly12. Alternatively, in other embodiments, one or more of the controller18, the power source 20 and the selector assembly 22 can be maintainedoutside the housing assembly 12.

The design of the housing assembly 12 can be varied. In the embodimentillustrated in FIG. 1A, the housing assembly 12 includes a housing front12A, a housing rear 12B, a power compartment cover 12C, and a pluralityof heat spreaders 12D, e.g., fins. Alternatively, the housing assembly12 can include more or fewer components than specifically illustrated inthis embodiment.

As shown, the housing front 12A can include a plurality of housingapertures 24, with each housing aperture 24 being aligned to allow forthe emitting and directing of the plurality of disparate light sources14 out of and/or away from the housing assembly 12 and away from thelight source assembly 10, such that the light sources 14 can be quickly,easily and accurately detected by the detector assembly 23. Inparticular, in this embodiment, the housing front 12A includes fivehousing apertures 24 to allow for the selective and/or alternativeemitting and directing of five disparate light sources 14 from the lightsource assembly 10. Alternatively, the housing front 12A can includegreater than five or fewer than five housing apertures 24. For example,in some embodiments, more than one light source 14 can be directed awayfrom the housing assembly 12 through a common housing aperture 24, thusrequiring fewer housing apertures 24 than light sources 14 in suchembodiments. Still alternatively, the housing apertures 24 can belocated in a different portion of the housing assembly 12.

In certain embodiments, the housing rear 12B provides the necessaryhousing for the various components of the housing assembly 10 that arepositioned at or near the rear of the light source assembly 10. FIG. 1Bis a simplified rear perspective view of the light source assembly 10 ofFIG. 1A. More particularly, FIG. 1B more clearly illustrates onenon-exclusive alternative design for the housing rear 12B of the housingassembly 12.

Returning to FIG. 1A, the power compartment cover 12C protects and/orcovers the power source 20 as the power source 20 is coupled to, securedto, and/or positioned within the housing assembly 12. In one embodiment,the power compartment cover 12C can be selectively and independentlyremoved and/or opened to allow for any changes or modifications to thepower source 20.

The heat spreaders 12D help to spread and/or transfer heat from thelight source assembly 10, i.e. to effectively move heat away from thelight sources 14. More particularly, in one non-exclusive alternativeembodiment, the heat spreaders 12D can comprise a plurality of fins thatprovide greater surface area for the housing assembly 12 as a means tomore effectively transfer heat away from the light sources 14 and/orother components of the light source assembly 10 and into thesurrounding environment. Alternatively, the heat spreaders 12D can havea different design than that shown in the Figures. Still alternatively,the housing assembly 12 can be designed without the heat spreaders 12D.

It should be appreciated that the light source assembly 10 is designedto provide natural convection cooling for the light sources 14 and theother components of the light source assembly 10. With such design, thehousing assembly 12 can be designed without the heat spreaders 12D;although the heat spreaders 12D, as described, can further enhance theability of the light source assembly 10 to effectively move heat awayfrom the light sources 14 and the other components of the light sourceassembly 10.

Additionally, the overall shape and size of the housing assembly 12 canbe varied to suit the specific requirements of the light source assembly10. For example, in certain embodiments, the housing assembly 12 can besubstantially rectangular box-shaped and can have a length of betweenapproximately two inches and four inches, a width of betweenapproximately two inches and three inches, and a thickness of betweenapproximately 0.5-1.25 inches. In one non-exclusive embodiment, thehousing assembly 12 is substantially rectangular box shaped, and has alength of 3.75 inches, a width of 2.5 inches, and a thickness of oneinch. Alternatively, in other suitable embodiments, the housing assembly12 can be other that substantially rectangular box-shaped, and/or thehousing assembly 12 can have a length, width and thickness that aregreater than or less than the specific dimensions discussed hereinabove. For example, in certain such alternative embodiments, the housingassembly 12 can be substantially square box-shaped, cylindricaldisk-shaped, hexagonal disk-shaped, octagonal disk-shaped, or anothersuitable shape.

In particular, in yet another non-exclusive example, the housingassembly 12 has a cylindrical shape with a diameter of betweenapproximately one inch and four inches and a thickness of betweenapproximately 0.5-3 inches.

The number, type, design, positioning and orientation of the disparatelight sources 14 can be varied depending on the specific requirements ofthe light source assembly 10. In the embodiment illustrated in FIG. 1A,the light source assembly 10 includes five disparate light sources 14,i.e. a first light source 14A, a second light source 14B, a third lightsource 14C, a fourth light source 14D and a fifth light source 14E thatare each coupled to, secured to, and/or positioned substantially withinthe housing assembly 12. Alternatively, the light source assembly 10 caninclude greater than five or fewer than five disparate light sources 14.Still alternatively, the plurality of light sources 14 can be groupedtogether in any suitable manner. Stated in another fashion, theplurality of light sources 14 can be arranged with one or more disparatelight sources 14 positioned in one or more different general locationswithin the housing assembly 12.

Additionally, each of the light sources 14 can be designed and/orindividually tuned to provide an output beam having a specificwavelength. For example, in one non-exclusive alternative embodiment,(i) the first light source 14A can be a long-wavelength infrared lightsource that generates and/or emits a first output beam 26A having acenter wavelength that is in a long-wavelength infrared range of betweenapproximately eight micrometers and fifteen micrometers; (ii) the secondlight source 14B can be a mid-wavelength infrared light source thatgenerates and/or emits a second output beam 26B having a centerwavelength that is in a mid-wavelength infrared range of betweenapproximately three micrometers and eight micrometers; (iii) the thirdlight source 14C can be a short-wavelength infrared light source thatgenerates and/or emits a third output beam 26C having a centerwavelength that is in a short-wavelength infrared range of betweenapproximately one point four (1.4) micrometers and three micrometers;(iv) the fourth light source 14D can be a near-infrared light sourcethat generates and/or emits a fourth output beam 26D having a centerwavelength that is in a near-infrared wavelength range of betweenapproximately seven hundred nanometers (i.e. 0.70 micrometers) and onepoint four (1.4) micrometers; and (v) the fifth light source 14E can bea visible light source that generates and/or emits a fifth output beam26E having a center wavelength that is in a visible wavelength range ofbetween approximately three hundred eighty and seven hundred nanometers.Alternatively, one or more of the light sources 14A-14E can be differentthan those specifically identified herein above (e.g., the light sources14A-14E can have different wavelengths such as those for a far-infraredlight source, an ultraviolet light source, an X-ray light source, oranother appropriate light source), and/or the light sources 14A-14E canbe positioned and/or oriented relative to one another in a differentmanner than is shown in FIG. 1A.

Further, as shown in FIG. 1A, each of the light sources 14A-14Egenerates and/or emits an independent output beam. In particular, (i)the first light source 14A generates and/or emits the first output beam26A (illustrated with a dashed line), e.g., a long-wavelength infraredoutput beam, along a first beam axis 27A; (ii) the second light source14B generates and/or emits the second output beam 26B (illustrated witha dashed line), e.g., a mid-wavelength infrared output beam, along asecond beam axis 27B; (iii) the third light source 14C generates and/oremits the third output beam 26C (illustrated with a dashed line), e.g.,a short-wavelength infrared output beam, along a third beam axis 27C;(iv) the fourth light source 14D generates and/or emits the fourthoutput beam 26D (illustrated with a dashed line), e.g., anear-wavelength infrared output beam, along a fourth beam axis 27D; and(v) the fifth light source 14E generates and/or emits the fifth outputbeam 26E (illustrated with a dashed line), e.g., a visible light outputbeam, along a fifth beam axis 27E. In some embodiments, such as theembodiment illustrated in FIG. 1A, each of the output beams 26A-26E canbe spaced apart from and substantially parallel to each of the otheroutput beams 26A-26E. Thus, in such embodiments, each of the beam axes27A-27E can be spaced apart from and substantially parallel to each ofthe other beam axes 27A-27E.

Alternatively, in other embodiments, one or more of the output beams26A-26E can be directed away from the housing assembly 12 at an anglerelative to any of the other output beams 26A-26E, such that the outputbeams 26A-26E, and thus the beam axes 27A-27E, are not parallel to oneanother. For example, in some such alternative embodiments, one or moreof the output beams 26A-26E can be directed away from the housingassembly 12 through a different face of the housing assembly 12, e.g.,the first output beam 26A and the second output beam 26B can be directedaway from a front surface 344A (illustrated in FIG. 3) of the housingassembly 12, the third output beam 26C can be directed away from a firstside surface 344B (illustrated in FIG. 3) of the housing assembly 12,the fourth output beam 26D can be directed away from a rear surface 344C(illustrated in FIG. 3) of the housing assembly 12, and the fifth outputbeam 26E can be directed away from a second side surface 344D(illustrated in FIG. 3) of the housing assembly 12. It should beappreciated that in various alternative embodiments, each of the outputbeams 26A-26E can be directed away from the housing assembly 12 in anydesired direction(s), away from any surface(s) of the housing assembly12, and/or through any housing aperture(s) 24.

In various embodiments, each of the output beams 26A-26E can be viewablewith the detector assembly 23. Stated in another manner, during use, thedetector assembly 23 can selectively detect each of the output beams26A-26E that are generated and/or emitted by the light sources 14A-14E.Additionally, in some embodiments, the output beams 26A-26E can havehigh peak (maximum) pulsed (or continuous wave) intensities, e.g.,greater than one watt, greater than two watts, etc., that enable viewingof the output beams 26A-26E over large distances. Moreover, one or moreof the output beams 26A-26E can be viewable day and night, and throughinclement weather conditions (e.g., fog, rain, snow, smoke, clouds, ordust in the atmosphere).

It should be appreciated that the use of the terms “first light source”,“second light source”, “third light source”, “fourth light source”, and“fifth light source” is merely for purposes of convenience and ease ofillustration, and any of the light sources 14A-14E can be equallyreferred to as the “first light source”, the “second light source”, the“third light source”, the “fourth light source”, and/or the “fifth lightsource”. Similarly, it should also be appreciated that the use of theterms “first output beam”, “second output beam”, “third output beam”,“fourth output beam”, and “fifth output beam” is merely for purposes ofconvenience and ease of illustration, and any of the output beams26A-26E can be equally referred to as the “first output beam”, the“second output beam”, the “third output beam”, the “fourth output beam”,and/or the “fifth output beam”. Still similarly, it should further beappreciated that the use of the terms “first beam axis”, “second beamaxis”, “third beam axis”, “fourth beam axis”, and “fifth beam axis” ismerely for purposes of convenience and ease of illustration, and any ofthe beam axes 27A-27E can be equally referred to as the “first beamaxis”, the “second beam axis”, the “third beam axis”, the “fourth beamaxis”, and/or the “fifth beam axis”.

In certain embodiments, the optical assembly 16 can be provided toenable any desired focusing, shaping and directing of the output beams26A-26E from each of the plurality of disparate light sources 14A-14E.For example, in certain embodiments, the optical assembly 16 can includeone or more lenses, mirrors, diffractive optical elements (DOE) and/orother optical elements to enable any desired focusing, shaping anddirecting of the output beams 26A-26E from each of the plurality ofdisparate light sources 14A-14E. Additionally and/or alternatively, theoptical assembly 16 can include a window designed such that the outputbeams 26A-26E are not collimated, i.e. are uncollimated. Stillalternatively, one or more of the output beams 26A-26E can be directedaway from the housing assembly 12 of the light source assembly 10without the need for any optical elements. In such embodiments, each ofthe output beams 26A-26E will again be uncollimated.

The controller 18 (illustrated in FIG. 1D) is coupled to, secured to,and/or positioned substantially within the housing assembly 12. Duringuse, the controller 18 enables the necessary and desired control of theoperation of the light source assembly 10, i.e. the selective operationof one or more of the plurality of disparate light sources 14, byselectively controlling the electrical power that is provided by thepower source 20 to the light sources 14A-14E. In certain applications,the controller 18 selectively directs current from the power source 20to one of the light sources 14 such that only one light source 14 isactivated at a time. Alternatively, in other applications, thecontroller 18 can selectively direct current from the power source 20 toone of the light sources 14, e.g., the first light source 14A, in afirst duty cycle, and direct current from the power source 20 to anotherof the light sources 14, e.g., the second light source 14B, in a secondduty cycle that is different from the first duty cycle. In suchembodiments, the controller 18 can selectively activate multiple lightsources 14 such that any two of the output beams 26A-26E can begenerated in an alternating (or random) pattern. Still alternatively, instill other embodiments, the controller 18 can selectively directcurrent from the power source 20 to multiple light sources 14 so as toenable multiple light sources 14 to be activated at any given time. Onenon-exclusive embodiment of an exemplary controller 18 that can be usedwith the present invention is illustrated in and will be described ingreater detail in relation to FIG. 1D.

The power source 20 is coupled to, secured to, and/or positionedsubstantially within the housing assembly 12. In various embodiments,the power source 20 provides the necessary and desired electrical powerto effectively and efficiently operate the light source assembly 10,i.e. to selectively activate and control one or more of the plurality ofdisparate light sources 14.

The selector assembly 22 is electrically connected to the controller 18.In certain embodiments, the selector assembly 22 enables the user toselectively choose between a variety of potential modes of operation viaa plurality of selector settings 29. The potential modes of operationand/or the specific selector settings 29 can be varied to suit thespecific design requirements of the light source assembly 10. FIG. 1C isa simplified top perspective view of the light source assembly 10 ofFIG. 1A, which provides a clear illustration of some of the selectorsettings 29 available in this embodiment via the selector assembly 22.For example, the selector assembly 22 shows that the user can selectbetween the following modes of operation and/or selector settings 29:(i) on, with the long-wavelength infrared light source 14A (illustratedin FIG. 1A) and the mid-wavelength infrared light source 14B(illustrated in FIG. 1A) operating in an alternating manner; (ii) on,using the mid-wavelength infrared light source 14B; (iii) on, using thelong-wavelength infrared light source 14A; (iv) on, using theshort-wavelength infrared light source 14C (illustrated in FIG. 1A); (v)on, using the near-infrared light source 14D (illustrated in FIG. 1A);(vi) on, using the visible light source 14E (illustrated in FIG. 1A);and (vii) off. It should be appreciated that the potential modes ofoperation and/or selector settings 29 can be expanded to include acombined and/or alternating use of any combination of the plurality oflight sources 14A-14E illustrated specifically herein. Additionally, itshould further be appreciated that the potential modes of operationand/or selector settings 29 can be expanded to include individual and/orcombined (e.g., alternating) use of any other light sources that maypotentially be included within the light source assembly 10.

Additionally, in certain embodiments, the selector assembly 22 canfurther be adjusted by the user to enable the selective adjustment of apulse rate and/or duty cycle of the emission of the output beams 26A-26E(illustrated in FIG. 1A) when the output beams 26A-26E are generatedand/or emitted in a pulsed mode of operation, and/or to enable one ormore of the output beams 26A-26E to be generated and/or emitted in acontinuous wave mode of operation. For example, when it is desired bythe user to generate and/or emit the output beams 26A-26E is a pulsedmode of operation, the user can make a selection via the selectorassembly 22 such that the controller 18 (illustrated in FIG. 1D) pulsesthe power, i.e. the current, that is directed from the power source 20to the light source 14 over time. In one non-exclusive setting, the dutycycle can be approximately fifty percent, e.g. the power can be directedto the light source 14 for a predetermined period of time andalternately the power is not directed to the light source 14 for thesame predetermined period of time. Alternatively, the duty cycle can begreater than or less than fifty percent, i.e. the power can be directedto the light source for a longer or shorter period of time than thepower is not being directed to the light source 14. Further, when it isdesired by the user to generate and/or emit the output beams 26A-26E ina continuous wave mode of operation, the user can make a selection viathe selector assembly 22 such that the controller 18 continuouslydirects power, i.e. current, from the power source 20 to the lightsource 14.

It should be appreciated that utilizing a pulsed mode of operation canassist the light source assembly 10 in achieving more efficient and/orlower overall power usage by the power source 20, and can furtherinhibit the undesired generation of heat within the light sourceassembly 10. Moreover, it should be realized that such benefits can beachieved by utilizing a pulsed mode of operation regardless of whetherthe light source assembly 10 is utilizing multiple light sources 14A-14Ein an alternating manner, or whether the light source assembly 10 isutilizing only a single given light source 14A-14E at any given time.

Simplified graphical illustrations of possible current inputs and beamoutputs for each of the settings discussed specifically herein areillustrated and described herein below in relation to FIGS. 4A-4F, withthe exception of the “off” setting where no current is provided to anyof the light sources 14A-14E and no output beams 26A-26E are generatedand emitted by the light source assembly 10.

FIG. 1D is a simplified rear perspective view of a portion of the lightsource assembly 10 of FIG. 1A. In particular, FIG. 1D is a simplifiedrear perspective view of the light source assembly 10 with the housingrear 12B having been removed so that certain elements, e.g., thecontroller 18, can be more clearly illustrated.

The controller 18 controls the operation of the light source assembly 10including the electrical power that is directed from the power source 20(illustrated in FIG. 1E) to each of the plurality of disparate lightsources 14 (illustrated in FIG. 1A) that are included as part of thelight source assembly 10. The design of the controller 18 can be varied.For example, the controller 18 can include one or more processors andcircuits that are electrically connected to the selector assembly 22.With this design, the processors control the selective operation of eachof the plurality of disparate light sources 14.

Additionally, as noted above, in certain embodiments, the controller 18can direct power to one or more of the light sources 14 in a pulsedfashion to minimize heat generation in, and power consumption by thelight sources 14, while still achieving the desired average opticalpower of the output beams 26A-26E (illustrated in FIG. 1A). This enablesmore efficient use of the power source 20 such that the power source 20,e.g., one or more batteries, can be used for a longer period of time ascompared to when used in a continuous wave mode of operation. Such lowbattery drain can be crucial for long life of the light source assembly10 when being used in the field. Additionally, this helps to minimizethe heat generated. As a result thereof, this increases the number ofoperational environments in which the assembly can be used. For example,this allows the assembly to be used in a high temperature desert.

It should be noted that in certain embodiments, active cooling (e.g.with a fan or TEC) of the assembly is not required because of the uniquedesign provided herein. Alternatively, in certain embodiments, theassembly can be actively cooled.

Further, in certain embodiments, the controller 18 can include a boostconverter (e.g., a DC-to-DC power converter), a capacitor assembly, areduction DC-to-DC power converter, a switch assembly, and a processorthat can be utilized in conjunction with one another to enable thecontroller 18 to effectively and efficiently utilize power from thepower source 20 to selectively operate each of the plurality ofdisparate light sources 14.

FIG. 1E is a simplified front perspective view of a portion of the lightsource assembly 10 of FIG. 1A. In particular, FIG. 1E is a simplifiedfront perspective view of the light source assembly 10 with the powercompartment cover 12C having been removed so that certain elements,e.g., the power source 20, can be more clearly illustrated.

The power source 20 provides electrical power for the light sources 14(illustrated in FIG. 1A) and the controller 18 (illustrated in FIG. 1D).As shown in FIG. 1E, the power source 20 can include a plurality ofbatteries 20A that are positioned within a battery compartment 20B. Thebatteries 20A provide the necessary power for full operation of thelight source assembly 10. In one embodiment, as illustrated, the powersource 20 can include three batteries 20A. Alternatively, the powersource 20 can be designed to include greater than three or fewer thanthree batteries 20A. Still alternatively, the power source 20 can bedesigned in another manner, i.e. without the use of batteries 20A. Forexample, the power source 20 can be a generator or other type ofexternal power source that is positioned outside the housing assembly12, and the power source 20 can be electrically connected to the lightsource assembly 10 via one or more wires. Yet alternatively, such anexternal power source 20 can also be wirelessly, electrically connectedto the light source assembly 10.

FIG. 1F is a simplified front perspective view of a portion of the lightsource assembly 10 of FIG. 1A. In particular, FIG. 1F is a simplifiedfront perspective view of the light source assembly 10 with the housingassembly 12 having been removed for purposes of more clearlyillustrating certain features and aspects of the present invention. Forexample, FIG. 1F illustrates certain features and aspects of the lightsources 14A-14E, and the optical assembly 16 that can be provided toenable any desired focusing, shaping and directing of the output beams26A-26E (illustrated in FIG. 1A) from each of the plurality of disparatelight sources 14A-14E.

The design, positioning and mounting of each of the light sources14A-14E can be varied to suit the specific design requirements of thelight source assembly 10. In some embodiments, the first light source14A can comprise a quantum cascade laser source (as shown in greaterdetail in FIG. 1G), the second light source 14B can also comprise aquantum cascade laser source (as shown in greater detail in FIG. 1H),and each of the third light source 14C, the fourth light source 14D andthe fifth light source 14E can comprise LED light sources, laser diodeand/or photonic crystal light sources. Alternatively, one or more of thelight sources 14A-14E can have a different design.

Additionally, in certain embodiments, as shown in FIG. 1F, the firstlight source 14A can be mounted on a first mounting board 28A, thesecond light source 14B can be mounted on a second mounting board 28B,and the third light source 14C, the fourth light source 14D and thefifth light source 14E can be mounted together on a common thirdmounting board 28C. Additionally, in this embodiment, each of themounting boards 28A-28C are independent of the other mounting boards28A-28C. Alternatively, the light sources 14A-14E can be mounted in adifferent manner than specifically shown in FIG. 1F. For example, eachof the light sources 14A-14E can be mounted on a single, common mountingboard, and/or each of the light sources 14A-14E can be mounted on aseparate, independent mounting board.

Further, FIG. 1F further illustrates certain variable aspects for theselector settings 29 that can be chosen by the user via the selectorassembly 22.

Still further, FIG. 1F also illustrates that the light source assembly10 can include an alert system 30. The alert system 30 can beprogrammable so as to alert the user when and if one or more features ofthe light source assembly 10 have been activated. The alert system 30can have any suitable design. For example, in one non-exclusiveembodiment, the alert system 30 can include a vibrator that vibrateswhen and if one or more features of the light source assembly 10 havebeen activated. More specifically, the alert system 30 can be used toalert the user that one or more of the output beams are being generated.The alert system 30 can also be coded such that a different alert signalis provided depending on the specific settings (e.g. specific outputbeams) that have been activated within the light source assembly 10.

FIG. 1G is a simplified side perspective view of a portion of the lightsource assembly 10 of FIG. 1A. In particular, FIG. 1G illustratesadditional features of one or more of the plurality of disparate lightsources 14. For example, FIG. 1G illustrates certain features that canbe included as part of the first light source 14A.

As illustrated in FIG. 1G, the first light source 14A can be a quantumcascade laser (QCL) that generates and/or emits a coherent, first outputbeam 26A (illustrated in FIG. 1A). More particularly, in one embodiment,the first light source 14A can include a Quantum Cascade (QC) gainmedium 32 that directly emits a light beam, i.e. the first output beam26A, that is in the long-wavelength infrared range. With this design,electrons transmitted through the QC gain medium 32 emit one photon ateach of the energy steps. For example, the QC gain medium 32 can use twodifferent semiconductor materials such as InGaAs and AlInAs (grown on anInP or GaSb substrate, for example) to form a series of potential wellsand barriers for electron transitions. The thickness of thesewells/barriers determines the wavelength characteristic of the QC gainmedium 32. Additionally, in one, non-exclusive such embodiment, thesemiconductor QCL laser chip is mounted epitaxial growth side down.Alternatively, the first light source 14A can include aninterband-cascade (IC) laser, a diode laser, and/or any other lasercapable of generating radiation in the appropriate long-wavelengthinfrared spectral region.

FIG. 1G further illustrates certain aspects of one non-exclusiveembodiment of the optical assembly 16. For example, as related to thefirst light source 14A, the optical assembly 16 can be positionedsubstantially adjacent to the QC gain medium 32 in line with the lasingaxis. In certain embodiments, the optical assembly 16 can include onelens or more than one lens that collimate and focus the light or canspread the light to provide other beam shapes such as top hat, doughnut,spherical configurations after the beam exits the facet of the QC gainmedium 32. In one such embodiment, the optical assembly 16 can includean aspherical lens having an optical axis that is aligned with thelasing axis. Alternatively, the optical assembly 16 can have a differentdesign relative to the first light source 14A. Still alternatively, asnoted above, the first light source 14A can be provided without theoptical assembly 16, and/or with the optical assembly 16 simplyincluding a window, such that the first output beam 26A is uncollimated.

FIG. 1H is a simplified side perspective view of a portion of the lightsource assembly 10 of FIG. 1A. In particular, FIG. 1H illustratesadditional features of one or more of the plurality of disparate lightsources 14. For example, FIG. 1H illustrates certain features that canbe included as part of the second light source 14B.

In one embodiment, the design of the second light source 14B can besomewhat similar to that of the first light source 14A. For example, asillustrated in FIG. 1H, the second light source 14B can be a quantumcascade laser (QCL) that generates and/or emits a coherent, secondoutput beam 26B (illustrated in FIG. 1A). More particularly, in oneembodiment, the second light source 14B can include a Quantum Cascade(QC) gain medium 34 that directly emits a light beam, i.e. the secondoutput beam 26A, that is in the mid-wavelength infrared range. With thisdesign, electrons transmitted through the QC gain medium 34 emit onephoton at each of the energy steps. For example, the QC gain medium 34can use two different semiconductor materials such as InGaAs and AlInAs(grown on an InP or GaSb substrate, for example) to form a series ofpotential wells and barriers for electron transitions. The thickness ofthese wells/barriers determines the wavelength characteristic of the QCgain medium 34. Additionally, in one, non-exclusive such embodiment, thesemiconductor QCL laser chip is mounted epitaxial growth side down.Alternatively, the second light source 14B can include aninterband-cascade (IC) laser, a diode laser, and/or any other lasercapable of generating radiation in the appropriate mid-wavelengthinfrared spectral region.

FIG. 1H further illustrates certain aspects of one non-exclusiveembodiment of the optical assembly 16. For example, as related to thesecond light source 14B, the optical assembly 16 can be positionedsubstantially adjacent to the QC gain medium 34 in line with the lasingaxis. In certain embodiments, the optical assembly 16 can include onelens or more than one lens that collimate and focus the light or canspread the light to provide other beam shapes such as top hat, doughnut,spherical configurations after the beam exits the facet of the QC gainmedium 34. In one such embodiment, the optical assembly 16 can includean aspherical lens having an optical axis that is aligned with thelasing axis. Alternatively, the optical assembly 16 can have a differentdesign relative to the second light source 14B. Still alternatively, asnoted above, the second light source 14B can be provided without theoptical assembly 16, and/or with the optical assembly 16 simplyincluding a window, such that the second output beam 26B isuncollimated.

It should be noted that in certain embodiments, the light sources14A-14E and/or the optical assembly 16 can be positioned such that thelight source assembly 10 can provide as much as a fully sphericaloptical output.

FIG. 2A is a simplified front perspective view of another embodiment ofa light source assembly 210 having features of the present invention.The light source assembly 210 illustrated in FIG. 2A is substantiallysimilar to the light source assembly 10 illustrated and described hereinin relation to FIGS. 1A-1H. For example, the light source assembly 210can include a housing assembly 212, a plurality of disparate lightsources 214, an optical assembly 216, a controller (not illustrated), apower source (not illustrated), and a selector assembly 222 that aresubstantially similar to the housing assembly 12, the plurality ofdisparate light sources 14, the optical assembly 16, the controller 18,the power source 20, and the selector assembly 22 illustrated anddescribed herein in relation to FIGS. 1A-1H.

However, in this embodiment, the light source assembly 210 furtherincludes a thermal shield 236, e.g., a solar shield, that can bepositioned substantially adjacent to the housing assembly 212, e.g.,substantially adjacent to the housing front (not shown) and the powercompartment cover (not shown). For example, in one embodiment, thethermal shield 236 can include a shield body 238 that is coupled to thehousing assembly 212, e.g., with a plurality of shield fasteners 240,such that the shield body 238 can be positioned spaced apart from thehousing assembly 212. With this design, the thermal shield 236 functionsto inhibit energy, e.g., heat, from contacting the housing assembly 212and/or being conducted into the other components of the light sourceassembly 210.

The thermal shield 236 is designed to shield the remainder of the lightsource assembly 210 from absorbing excessive energy from an externalenergy source 242 (illustrated as a circle), e.g., the sun, by eitherdissipating, reflecting or simply absorbing the energy. The design ofthe thermal shield 236 can be varied depending on the specificrequirements of the light source assembly 210. In certain embodiments,as shown in FIG. 2A, the shield body 238 can have a lattice-type designthat effectively inhibits and/or blocks at least a majority of theenergy, e.g., the solar rays, from hitting a percentage of the housingassembly 212. Additionally, the holes that are provided in thelattice-type design allow for natural convection cooling of the topsurface of the housing assembly 212. Alternatively, the thermal shield236, i.e. the shield body 238, can have a different design than thatillustrated in FIG. 2A.

FIG. 2B is a simplified side perspective view of the light sourceassembly 210 of FIG. 2A. In particular, this side perspective viewbetter illustrates how the shield body 238 of the thermal shield 236 canbe coupled to and spaced apart from the housing assembly 212 of thelight source assembly 210. For example, in some embodiments, each of theshield fasteners 240, e.g., screws, can extend within and/or through afastener housing 240H that is positioned, at least in part, between thehousing assembly 212 and the shield body 238. Thus, in such embodiments,the fastener housing 240H enables the shield body 238 to be maintainedspaced apart from the housing assembly 212, while still enabling thefasteners to effectively couple the shield body 238 to the housingassembly 212.

FIG. 2C is a front perspective view of a portion of the light sourceassembly 210 of FIG. 2A. In particular, FIG. 2C illustrates a potentialdesign for the shield body 238 that can be utilized to effectivelyinhibit and/or block a majority of the energy, e.g., the solar rays,from hitting the housing assembly 212 (illustrated in FIG. 2A), whilestill allowing for natural convection cooling of the top surface of thehousing assembly 212. As shown, and as noted above, the shield body 238can have a lattice-type design that enables such desirable features tobe effectively accomplished.

In some embodiments, such as shown in FIG. 2C, the shield body 238 caninclude a plurality of cooling apertures 243C that can be sized andpositioned to most effectively enable natural convection cooling of thefull housing assembly 212. In certain non-exclusive alternativeembodiments, the cooling apertures 243C can be substantially similar insize, can be evenly spaced apart from one another and can be sized to bepositioned within between twenty percent and forty-five percent of theshield body 238. In one non-exclusive embodiment, the shield body 238can include seven rows of cooling apertures 243C that each include sevenindividual cooling apertures 243C. Alternatively, the shield body 238can include greater of fewer cooling apertures 243C than what isillustrated in FIG. 2C and/or the cooling apertures 243C can bepositioned within greater than forty-five percent or less than twentypercent of the shield body 238.

Additionally, as shown, the shield body 238 can further include a beamaperture 243B that is positioned and sized to allow each of the outputbeams 26A-26E (illustrated in FIG. 1A) from each of the light sources14A-14E (illustrated in FIG. 1A) to be directed away from the housingassembly 212 and through the beam aperture 243B. In one embodiment, asshown, the beam aperture 243B can be substantially rectangle-shaped.Alternatively, the beam aperture 243B can be another suitable shape.

FIG. 3 is a simplified schematic front perspective view of a portion ofstill another embodiment of a light source assembly 310 having featuresof the present invention. In particular, FIG. 3 provides a simplifiedfront perspective view of another embodiment of the housing assembly312, with the additional features of the light source assembly 310having been omitted for purposes of clarity.

As noted above, in certain embodiments, the light source assembly 310can be designed such that one or more of the output beams 26A-26E(illustrated in FIG. 1A) can be directed away from the housing assembly312 at an angle relative to any of the other output beams 26A-26E, suchthat the output beams 26A-26E, and thus the beam axes 27A-27E(illustrated in FIG. 1A), are not parallel to one another. For example,in the non-exclusive alternative embodiment illustrated in FIG. 3, thehousing assembly 312 can include a plurality of housing apertures 324,with one or more of the housing apertures 324 being potentiallypositioned along a front surface 344A, a first side surface 344B, a rearsurface 344C and a second side surface 344D of the housing assembly 312.With this design, one or more of the output beams 26A-26E can bedirected away from the housing assembly 312 through a different face ofthe housing assembly 312. For example, in one non-exclusive alternativearrangement, the first output beam 26A and the second output beam 26Bcan be directed away from the front surface 344A of the housing assembly312, the third output beam 26C can be directed away from the first sidesurface 344B of the housing assembly 312, the fourth output beam 26D canbe directed away from the rear surface 344C of the housing assembly 312,and the fifth output beam 26E can be directed away from the second sidesurface 344D of the housing assembly 312. Alternatively, the outputbeams 26A-26E can be directed away from the housing assembly 312 in adifferent manner. More specifically, it should be appreciated that invarious alternative embodiments, each of the output beams 26A-26E can bedirected away from the housing assembly 312 in any desired direction(s),away from any surface(s) 344A-344D of the housing assembly 12, and/orthrough any housing aperture(s) 324.

FIGS. 4A-4F are simplified graphical illustrations of current and outputfor various potential selector settings of the light source assembly ofFIG. 1A. In particular, FIG. 4A is a simplified graphical illustrationof current (illustrated with a solid line) and output (illustrated witha dashed line) for a first selector setting 429A wherein a first outputbeam 26A (illustrated in FIG. 1A) from a long-wavelength infrared lightsource 14A (illustrated in FIG. 1A) and a second output beam 26B(illustrated in FIG. 1A) from a mid-wavelength infrared light source 14B(illustrated in FIG. 1A) are generated in a pulsed and alternatingmanner; FIG. 4B is a simplified graphical illustration of current(illustrated with a solid line) and output (illustrated with a dashedline) for a second selector setting 429B wherein a first output beam 26Afrom a long-wavelength infrared light source 14A is generated in apulsed manner; FIG. 4C is a simplified graphical illustration of current(illustrated with a solid line) and output (illustrated with a dashedline) for a third selector setting 429C wherein a second output beam 26Bfrom a mid-wavelength infrared light source 14B is generated in a pulsedmanner; FIG. 4D is a simplified graphical illustration of current(illustrated with a solid line) and output (illustrated with a dashedline) for a fourth selector setting 429D wherein a third output beam 26C(illustrated in FIG. 1A) from a short-wavelength infrared light source14C is generated in a pulsed manner; FIG. 4E is a simplified graphicalillustration of current (illustrated with a solid line) and output(illustrated with a dashed line) for a fifth selector setting 429Ewherein a fourth output beam 26D (illustrated in FIG. 1A) from anear-infrared light source 14D (illustrated in FIG. 1A) is generated ina pulsed manner; and FIG. 4F is a simplified graphical illustration ofcurrent (illustrated with a solid line) and output (illustrated with adashed line) for a sixth selector setting 429F wherein a fifth outputbeam 26E (illustrated in FIG. 1A) from a visible light source 14E(illustrated in FIG. 1A) is generated in a pulsed manner.

With reference to FIG. 4A, at the first selector setting 429A, thecontroller 18 (illustrated in FIG. 1D) can selectively direct currentfrom the power source 20 (illustrated in FIG. 1E) to the first lightsource 14A (illustrated in FIG. 1A) in a first duty cycle 450 togenerate the first output beam 426A, and direct current from the powersource 20 to the second light source 14B (illustrated in FIG. 1A) in asecond duty cycle 452 that is different from the first duty cycle togenerate the second output beam 426B. In particular, in this embodiment,the first duty cycle 450 consists of current being directed to the firstlight source 14A for a first predetermined period of time and currentnot being directed to the first light source 14A for a secondpredetermined period of time, wherein the first predetermined period oftime is approximately equal in length to the second predetermined periodof time. Conversely, in this embodiment, the second duty cycle 452consists of current not being directed to the second light source 14Bfor the first predetermined period of time and current being directed tothe second light source 14B for the second predetermined period of time.With this non-exclusive example, each of the first duty cycle 450 andthe second duty cycle 452 is approximately fifty percent, e.g., withcurrent being directed and not directed to the given light source 14A,14B for a substantially equal period of time. Moreover, with this modeof operation, the first output beam 426A and the second output beam 426Bcan be generated and/or emitted from the light source assembly 10 in analternating manner. Alternatively, each of the first duty cycle 450 andthe second duty cycle 452 can be greater than or less than approximatelyfifty percent.

It should be noted that with the first selector setting 429A, (i) thefirst light source 14A and the second light source 14B are on atdifferent times (pulsed non-simultaneously); and (ii) the first outputbeam 426A and the second output beam 426B are non-simultaneous. Further,for the first selector setting 429A illustrated in FIG. 4A, the firstlight source 14A and the second light source 14B are pulsed in one forone alternating fashion, with a single pulse of the first output beam426A being generated between two pulses of the second output beam 426B.In non-exclusive other embodiments, the duty cycles can be designed sothat during certain periods of time, (i) multiple pulses of the firstoutput beam 426A are being generated between two pulses of the secondoutput beam 426B; and/or (ii) multiple pulses of the second output beam426B are being generated between two pulses of the first output beam426A. This feature allows for the generation of messages using thepulses of the output beams 426A, 426B.

Additionally, as shown in FIG. 4B, at the second selector setting 429B,the controller 18 (illustrated in FIG. 1D) can selectively directcurrent from the power source 20 (illustrated in FIG. 1E) to the firstlight source 14A (illustrated in FIG. 1A) in the first duty cycle 450Ato generate the first output beam 26A. In the non-exclusive embodimentillustrated in FIG. 4B, the first duty cycle 450A is approximately fiftypercent, e.g. the current is directed to the first light source 14A fora predetermined period of time and alternately the current is notdirected to the first light source 14A for the same predetermined periodof time. Alternatively, the first duty cycle 450A can be greater than orless than fifty percent.

Somewhat similarly, as shown in FIG. 4C, at the third selector setting429C, the controller 18 (illustrated in FIG. 1D) can selectively directcurrent from the power source 20 (illustrated in FIG. 1E) to the secondlight source 14B (illustrated in FIG. 1A) in a second duty cycle 450B togenerate the second output beam 426B. In the non-exclusive embodimentillustrated in FIG. 4C, the second duty cycle 450B is approximatelyfifty percent, e.g. the current is directed to the second light source14B for a predetermined period of time and alternately the current isnot directed to the second light source 14B for the same predeterminedperiod of time. Alternatively, the second duty cycle 450B can be greaterthan or less than fifty percent.

Further, as shown in FIG. 4D, at the fourth selector setting 429D, thecontroller 18 (illustrated in FIG. 1D) can selectively direct currentfrom the power source 20 (illustrated in FIG. 1E) to the third lightsource 14C (illustrated in FIG. 1A) in a third duty cycle 450C togenerate the third output beam 426C. In the non-exclusive embodimentillustrated in FIG. 4D, the third duty cycle 450C is approximately fiftypercent, e.g. the current is directed to the third light source 14C fora predetermined period of time and alternately the current is notdirected to the third light source 14C for the same predetermined periodof time. Alternatively, the third duty cycle 450C can be greater than orless than fifty percent.

Still further, as shown in FIG. 4E, at the fifth selector setting 429E,the controller 18 (illustrated in FIG. 1D) can selectively directcurrent from the power source 20 (illustrated in FIG. 1E) to the fourthlight source 14D (illustrated in FIG. 1A) in a fourth duty cycle 450D togenerate the fourth output beam 426D. In the non-exclusive embodimentillustrated in FIG. 4E, the fourth duty cycle 450D is approximatelyfifty percent, e.g. the current is directed to the fourth light source14D for a predetermined period of time and alternately the current isnot directed to the fourth light source 14D for the same predeterminedperiod of time. Alternatively, the fourth duty cycle 450D can be greaterthan or less than fifty percent.

Yet further, as shown in FIG. 4F, at the sixth selector setting 429F,the controller 18 (illustrated in FIG. 1D) can selectively directcurrent from the power source 20 (illustrated in FIG. 1E) to the fifthlight source 14E (illustrated in FIG. 1A) in a fifth duty cycle 450E togenerate the fifth output beam 426E. In the non-exclusive embodimentillustrated in FIG. 4F, the fifth duty cycle 450E is approximately fiftypercent, e.g. the current is directed to the fifth light source 14E fora predetermined period of time and alternately the current is notdirected to the fifth light source 14E for the same predetermined periodof time. Alternatively, the fifth duty cycle 450E can be greater than orless than fifty percent.

FIG. 5 is a simplified schematic illustration of another embodiment ofthe light source assembly 510. The light source assembly 510 shown inFIG. 5 is somewhat similar to, i.e. has many components in common with,the embodiments of the light source assembly illustrated and describedin detail herein above.

However, in this embodiment, the light source assembly 510 has aslightly different overall design and includes certain additionalcomponents than what was specifically shown in the previous embodiments.For example, as illustrated, the light source assembly 510 includes ahousing assembly 512, and at least two sets of disparate light sources560, at least two optical assemblies 562 and a temperature controlassembly 564 that are coupled to, secured to and/or retainedsubstantially within the housing assembly 512. Additionally, in thisembodiment, the light source assembly 510 includes a control system 566that is electrically connected to, e.g., with one or more wires 568, butis spaced apart from and positioned remotely from, the housing assembly512 and the at least two sets of disparate light sources 560, the atleast two optical assemblies 562 and the temperature control assembly564 that are coupled to, secured to and/or retained substantiallytherein. Further, as shown, the control system 566 includes a controller518 (illustrated in phantom), a power source 520 and a selector assembly522 that are coupled to, secured to and/or retained substantially withina power/control housing 570. Stated in another manner, in thisembodiment, the controller 518, the power source 520 and the selectorassembly 522 are coupled to, secured to and/or retained substantiallywithin the separate power/control housing 570, and are electricallyconnected to, but are spaced apart from and positioned remotely from,the housing assembly 512, and thus the at least two sets of disparatelight sources 560, the at least two optical assemblies 562 and thetemperature control assembly 564.

As provided herein, in this embodiment, the light source assembly 510can include any suitable number of sets of disparate light sources 560that are each configured to generate output (light) beams 671(illustrated in FIG. 6B) that are directed in a different general axialdirection, i.e. along and about a different central beam axis 673(illustrated in FIG. 6B). For example, in one embodiment, the lightsource assembly 510 can be configured to include four sets of disparatelight sources 560, i.e. a first plurality of disparate light sources560A, a second plurality of disparate light sources 560B, a thirdplurality of disparate light sources 560C (illustrated in FIG. 6C), anda fourth plurality of disparate light sources 560D (illustrated in FIG.6C), that are each configured to generate output (light) beams 671 thatare directed in a different general axial direction. More particularly,in this embodiment, the first plurality of disparate light sources 560Ais configured to generate first output (light) beams 671A (illustratedin FIG. 6B) that are directed in a first general axial direction alongand about a first central beam axis 673A (illustrated in FIG. 6B); thesecond plurality of disparate light sources 560B is configured togenerate second output (light) beams 671B (illustrated in FIG. 6B) thatare directed in a second general axial direction along and about asecond central beam axis 673B (illustrated in FIG. 6B) that is differentthan the first general axial direction; the third plurality of disparatelight sources 560C is configured to generate third output (light) beams671C (illustrated in FIG. 6B) that are directed in a third general axialdirection along and about a third central beam axis 673C (illustrated inFIG. 6B) that is different than the first general axial direction andthe second general axial direction; and the fourth plurality ofdisparate light sources 560D is configured to generate fourth output(light) beams 671D (illustrated in FIG. 6B) that are directed in afourth general axial direction along and about a fourth central beamaxis 673D that is different than the first general axial direction, thesecond general axial direction and the third general axial direction.

As discussed in greater detail herein below, with such design, it ispossible that the light source assembly 510 can generate output (light)beams 671A-671D that provide substantially 360-degree azimuthal coverageabout and/or relative to the housing assembly 512. Stated in anothermanner, in such embodiments, the output beams 671 can be detectable inany and all azimuthal directions relative to the housing assembly 512.Alternatively, in other embodiments, the light source assembly 510 canbe configured to include greater than four or less than four sets ofdisparate light sources 560. Still alternatively, the light sourceassembly 510 can generate output beams 671 that provide less than360-degree azimuthal coverage about and/or relative to the housingassembly 512. Yet alternatively, the light source assembly 510 can beconfigured such that only a single output light beam from a single lightsource is directed in any given direction away from the housing assembly512.

The housing assembly 512 can be any suitable size and shape for purposesof providing a housing for the sets of disparate light sources 560, theoptical assemblies 562 and the temperature control assembly 564. Forexample, as shown in the embodiment illustrated in FIG. 5, the housingassembly 512 can be substantially octagonal disk-shaped. Alternatively,the housing assembly 512 can be substantially rectangular box-shaped,square box-shaped, cylindrical disk-shaped, hexagonal disk-shaped,pyramid-shaped, or another suitable shape.

Additionally, as shown, the housing assembly 512 can include a pluralityof housing apertures 572 that are spaced apart from one another about aperimeter of the housing assembly 512. For example, in this embodiment,a housing aperture 572 can extend through every other side of thesubstantially octagonal disk-shaped housing assembly 512. The housingapertures 572 provide a means through which the output beams 671 thatare generated by the sets of disparate light sources 560 can be directedout of and away from the housing assembly 512.

In this embodiment, the housing assembly 512 includes a single housingaperture 572 for each plurality of disparate light sources 560. Moreparticularly, in this embodiment, the housing assembly 512 includes fourhousing apertures 572, with one housing aperture 572 being positionedsubstantially adjacent to each of the sets of disparate light sources560, i.e. a first housing aperture 572 is positioned substantiallyadjacent to the first plurality of disparate light sources 560A, asecond housing aperture 572 is positioned substantially adjacent to thesecond plurality of disparate light sources 560B, a third housingaperture 572 is positioned substantially adjacent to the third pluralityof disparate light sources 560C, and a fourth housing aperture 572 ispositioned substantially adjacent to the fourth plurality of disparatelight sources 560D. As above, each housing aperture 572 can be alignedto allow for the emitting and directing of the corresponding pluralityof disparate light sources 560 out of and/or away from the housingassembly 512 and away from the light source assembly 510, such that theindividual light sources can be quickly, easily and accurately detectedby the detector assembly 23 (illustrated in FIG. 1A).

With such design, the general axial direction that the output beams 671are directed for each of the sets of disparate light sources 560 can besubstantially evenly spaced apart about the housing assembly 512. Statedin another manner, in such embodiments, the central beam axes 673A-673Dcan be substantially evenly spaced apart from one another. Moreparticularly, in this embodiment that includes four housing apertures572 and four sets of disparate light sources 560, the general axialdirection that the output beams 671 are directed for each of the sets ofdisparate light sources 560 can be approximately ninety degrees from thegeneral axial direction of the output beams 671 of adjacent sets ofdisparate light sources 560. Alternatively, in an embodiment thatincludes six sets of disparate light sources 560, the general axialdirection that the output beams 671 are directed for each of the sets ofdisparate light sources 560 can be approximately sixty degrees from thegeneral axial direction of the output beams 671 of adjacent sets ofdisparate light sources 560. Still alternatively, in an embodiment thatincludes three sets of disparate light sources 560, the general axialdirection that the output beams 671 are directed for each of the sets ofdisparate light sources 560 can be approximately one hundred twentydegrees from the general axial direction of the output beams 671 ofadjacent sets of disparate light sources 560.

It is appreciated that in different embodiments and applications, thesets of disparate light sources 560 need not be evenly spaced apart fromone another, not each of the sets of disparate light sources 560 need tobe activated or operational at any given time, and the sets of disparatelight sources 560 need not provide approximately 360-degree azimuthalcoverage about and/or relative to the housing assembly 512. For example,in certain non-exclusive alternative embodiments, one or more of thesets of disparate light sources 560 can be activated or operated at anygiven time so as to provide at least approximately 180-degree,210-degree, 240-degree, 270-degree, 300-degree, 330-degree or 360-degreeazimuthal coverage about and/or relative to the housing assembly 512.Additionally, in other non-exclusive alternative embodiments, thecentral beam axes 673A-673D can be oriented and/or spaced apart at leastapproximately forty-five degrees, sixty degrees, seventy-five degrees,ninety degrees, one hundred five degrees, or one hundred twenty degreesfrom any adjacent central beam axes 673A-673D.

The number, type, design, positioning and orientation of the disparatelight sources within each plurality of disparate light sources 560 canbe varied depending on the specific requirements of the light sourceassembly 510. Additionally, as with the previous embodiments, each ofthe individual light sources within each plurality of disparate lightsources 560 can be designed and/or individually tuned to provide anoutput beam 671 having a specific wavelength. Further, similar toabove-described embodiments, each of the individual light sources cangenerate and/or emit an independent output beam.

Jumping ahead briefly to FIG. 6E, FIG. 6E is a simplified schematicperspective view illustration of a portion of the light source assembly510 illustrated in FIG. 5. In particular, FIG. 6E shows the housingassembly 512 and the at least two sets of disparate light sources 560,the at least two optical assemblies 562 and the temperature controlassembly 564 that are coupled to, secured to and/or retainedsubstantially therein, but with certain portions of the housing assembly512 having been removed for purposes of clarity. More specifically, FIG.6E illustrates certain additional features and aspects of the sets ofdisparate light sources 560.

In certain embodiments, each of the sets of disparate light sources 560can include the same number of disparate light sources 674. For example,as shown in FIG. 6E, each of the sets of disparate light sources 560 caninclude four disparate light sources 674, i.e. a first light source674A, a second light source 674B, a third light source 674C, and afourth light source 674D. Alternatively, each of the sets of disparatelight sources 560 can include greater than four or fewer than fourdisparate light sources 674. Still alternatively, each of the sets ofdisparate light sources 560 can include a different number of disparatelight sources 674.

Additionally, each of the disparate light sources 674 can be designedand/or individually tuned to provide an output beam 671 (illustrated inFIG. 6B) having a specific wavelength. Moreover, each of the sets ofdisparate light sources 560 can include individual disparate lightsources 674 that are designed and/or individually tuned to provide anoutput beam 671 having the same specific wavelength. Stated in anothermanner, in such embodiments, each of the sets of disparate light sources560 can include (i) the first light source 674A that generates and/oremits a first output beam 671 having a first center wavelength; (ii) thesecond light source 674B that generates and/or emits a second outputbeam 671 having a second center wavelength that is different than thefirst center wavelength; (iii) the third light source 674C thatgenerates and/or emits a third output beam 671 having a third centerwavelength that is different than the first center wavelength and thesecond center wavelength; and (iv) the fourth light source 674D thatgenerates and/or emits a fourth output beam 671 having a fourth centerwavelength that is different than the first center wavelength, thesecond center wavelength and the third center wavelength. In someembodiments, each of the output beams 671 within each of the sets ofdisparate light sources 560 can be spaced apart from and substantiallyparallel to each of the other output beams 671 within that plurality ofdisparate light sources 560. Alternatively, in other embodiments, one ormore of the output beams 671 within each of the sets of disparate lightsources 560 can be directed away from the housing assembly 512 at anangle relative to any of the other output beams 671 within thatplurality of disparate light sources 560, such that the output beams 671are not parallel to one another.

Further, as above, in various embodiments, each of the output beams 671can be viewable with the detector assembly 23 (illustrated in FIG. 1A).Stated in another manner, during use, the detector assembly 23 canselectively detect each of the output beams 671 that are generatedand/or emitted by each of the light sources 674A-674D within each of thesets of disparate light sources 560.

Returning now to FIG. 5, in certain embodiments, the light sourceassembly 510 can include a separate optical assembly 562 thatcorresponds with each of the sets of disparate light sources 560. Asabove, the optical assemblies 562 can be provided to enable any desiredfocusing, shaping and directing of the output beams 671 from eachindividual light source 674A-674D (illustrated in FIG. 6E) within eachof the sets of disparate light sources 560. For example, in certainembodiments, each optical assembly 562 can include one or more opticalelements 662A (illustrated in FIG. 6E), e.g., one or more lenses,mirrors, diffractive optical elements and/or other optical elements, toenable any desired focusing, shaping and directing of the output beams671 from each individual light source 674A-674D within each of the setsof disparate light sources 560. Additionally and/or alternatively, oneor more optical elements 662A of each optical assembly 562 can include awindow designed such that the output beams 671 are not collimated, i.e.are uncollimated. Still alternatively, one or more of the output beams671 can be directed away from the housing assembly 512 without the needfor any optical elements.

Jumping ahead again to FIG. 6E, in some embodiments, the opticalassembly 562 that corresponds to each of the sets of disparate lightsources 560 can include a single optical element 662A, e.g., a singlelens, mirror, diffractive optical element, window and/or other opticalelement, to enable any desired focusing, shaping and directing of theoutput beams 671 from each of the sets of disparate light sources 560.Stated in another manner, in such embodiments, each of the individuallight sources 674A-674D within each of the sets of disparate lightsources 560 can generate output beams 671 that are directed towardand/or through a single lens, mirror, diffractive optical element,window and/or other optical element. Alternatively, the optical assembly562 that corresponds to each of the sets of disparate light sources 560can include more than one lens, mirror, diffractive optical element,window and/or other optical element to enable any desired focusing,shaping and directing of the output beams 671 from each of the sets ofdisparate light sources 560. For example, in one non-exclusivealternative embodiment, the optical assembly 562 that corresponds toeach of the sets of disparate light sources 560 can include one or morelenses, mirrors, diffractive optical elements, windows and/or otheroptical elements for each individual light source 674A-674D within therespective plurality of disparate light sources 560.

Returning once again back to FIG. 5, the temperature control assembly564 is configured to control the heat that can be generated through theuse of the light source assembly 510. More specifically, in variousembodiments, the temperature control assembly 564 is configured to helpdissipate any heat generated during use of the light source assembly510, and/or to inhibit any such heat generated during use of the lightsource assembly 510 from adversely impacting any operations of the lightsource assembly 510. Particular features and aspects that may beincluded within the temperature control assembly 564 will be describedin greater detail herein below.

The control system 566 enables the necessary and desired control of theoperation of the light source assembly 510. More specifically, invarious embodiments, the controller 518 enables the necessary anddesired control of the operation of the light source assembly 510, i.e.the selective operation of one or more of the individual light sources674A-674D of each of the sets of disparate light sources 560, byselectively controlling the electrical power that is provided by thepower source 520 to the light sources 674A-674D. In certainapplications, the controller 518 selectively directs current from thepower source 520 to one or more of the light sources 674A-674D based onthe particular selections made by the operator via the selector assembly522. Additionally, as above, each of the individual light sources674A-674D of each of the sets of disparate light sources 560 can beoperated in a pulsed mode of operation (and with any desired duty cycle)or in a continuous wave mode of operation.

The design of the controller 518 can be varied. In some embodiments, thecontroller 518 can include one or more processors and circuits that areelectrically connected to the selector assembly 522. With this design,the processors control the selective operation of each of the individuallight sources 674A-674D in each of the sets of disparate light sources560 based on selections made by the operator via the selector assembly522. Additionally, as noted above, in certain embodiments, thecontroller 18 can direct power to one or more of the light sources674A-674D in a pulsed fashion to minimize heat generation in, and powerconsumption by the light sources 674A-674D, while still achieving thedesired average optical power of the output beams. This enables moreefficient use of the power source 520 as well as helping to minimize theheat generated. As a result thereof, this increases the number ofoperational environments in which the light source assembly 510 can beused.

The power source 520 is coupled to, secured to, and/or positionedsubstantially within the power/control housing 570. Additionally, thepower source 520 is electrically connected to the controller 518, theselector assembly 522, the individual light sources 674A-674D of each ofthe sets of disparate light sources 560, and the temperature controlassembly 564. In various embodiments, the power source 520 provides thenecessary and desired electrical power to effectively and efficientlyoperate the light source assembly 510, e.g., to selectively activate andcontrol one or more of the individual light sources 674A-674D of each ofthe sets of disparate light sources 560. In one non-exclusivealternative embodiment, the power source 520 can include a generatorthat is external to the power/control housing 570, but is electricallycoupled to the power/control housing 570 and the components coupled to,secured to, and/or positioned substantially therein. It is understoodthat any generator that may be used as part of the power source 520 canbe of any suitable size. For example, the generator can be used solelyas part of the light source assembly 510 or the generator can be used tooperate one or more other systems and devices in addition to its usewith the light source assembly 510. For example, when the light sourceassembly 510 is utilized with or on a vehicle, the generator can beutilized to power various systems and devices within the vehicle.Alternatively, in another non-exclusive embodiment, the power source 520can include one or more batteries that can be, but need not be, retainedsubstantially within the power/control housing 570. Still alternatively,in still another non-exclusive embodiment, the power source 520 caninclude a generator that is internal to the power/control housing 570.Additionally, as shown, in any embodiments of the power source 520, thepower source 520 can be selectively activated and/or regulated throughuse of a power switch 520A.

The selector assembly 522 is electrically connected to the controller518. For example, in some embodiments, the selector assembly 522 caninclude one or more switches and/or one or more dials that are eachelectrically connected to the controller 518. In certain embodiments,the selector assembly 522 enables the user to selectively choose betweena variety of potential modes of operation via a plurality of selectorsettings 529. The potential modes of operation and/or the specificselector settings 529 can be varied to suit the specific designrequirements of the light source assembly 510. It should be appreciatedthat the potential modes of operation and/or selector settings 529 caninclude a combined and/or alternating use of any single or anycombination of the individual light sources 674A-674D of each of thesets of disparate light sources 560. Additionally, as shown, theselector assembly 522 can include a separate switch 522A for each of theindividual light sources 674A-674D (i.e. each band) of each of the setsof disparate light sources 560. Further, in certain embodiments, theselector assembly 522 can be adjusted by the user to enable theselective adjustment of a pulse rate and/or duty cycle of the emissionof the output beams 671 when the output beams 671 are generated and/oremitted in a pulsed mode of operation, and/or to enable one or more ofthe output beams 671 to be generated and/or emitted in a continuous wavemode of operation. Additionally, as noted above, it should beappreciated that utilizing a pulsed mode of operation can assist thelight source assembly 510 in achieving more efficient and/or loweroverall power usage by the power source 520, and can further inhibit theundesired generation of heat within the light source assembly 510.

FIG. 6A is a simplified schematic perspective view illustration of aportion of the light source assembly 510 illustrated in FIG. 5. Moreparticularly, FIG. 6A is a simplified schematic perspective viewillustration of the housing assembly 512 and the at least two sets ofdisparate light sources 560, the at least two optical assemblies 562,and the temperature control assembly 564 that are coupled to, secured toand/or retained substantially therein.

FIG. 6B is another simplified schematic perspective view illustration ofthe portion of the light source assembly 510 illustrated in FIG. 6A. Inparticular, FIG. 6B is a simplified schematic perspective viewillustration that shows output beams 671 that have been emitted withineach of the sets of disparate light sources 560 (illustrated in FIG. 5)and that are being directed away from the housing assembly 512 throughone of the housing apertures 572 (illustrated more clearly in FIG. 5).More specifically, FIG. 6B illustrates (i) first output beams 671A thathave been emitted from the first plurality of disparate light sources560A (illustrated in FIG. 5); (ii) second output beams 671B that havebeen emitted from the second plurality of disparate light sources 560B(illustrated in FIG. 5); (iii) third output beams 671C that have beenemitted from the third plurality of disparate light sources 560C(illustrated in FIG. 6C); and (iv) fourth output beams 671D that havebeen emitted from the fourth plurality of disparate light sources 560D(illustrated in FIG. 6C). As illustrated, and as noted above, the outputbeams 671A-671D from each of the sets of disparate light sources 560 canat least slightly overlap one another such that the light sourceassembly 510 is able to provide substantially 360-degree azimuthalcoverage about and/or relative to the housing assembly 512. With suchdesign, the detector assembly 23 (illustrated in FIG. 1A) is able toeffectively capture and/or detect the signal from the light sourceassembly 510 regardless of the orientation of the light source assembly510, i.e. of the housing assembly 512, relative to the detector assembly23, provided that the detector assembly 23 is close enough and ispointing generally toward the light source assembly 510. Alternatively,as noted above, the output beams 671A-671D from each of the sets ofdisparate light sources 560 can be configured to provide less thanapproximately 360-degree azimuthal coverage about and/or relative to thehousing assembly 512.

It is appreciated that the output beams 671A-671D that are generatedand/or emitted from each of the sets of disparate light sources 560 caninclude any single individual light source 674A-674D or any combinationof the individual light sources 674A-674B from each of the sets ofdisparate light sources 560. Additionally, as noted above, it is alsoappreciated that the output beams 671A-671D can be generated and/oremitted from each of the sets of disparate light sources 560 in a pulsedmode of operation and/or in a continuous wave mode of operation.

FIG. 6C is an exploded view illustration of the portion of the lightsource assembly 510 illustrated in FIG. 6A. As shown, FIG. 6Cillustrates certain specific features and aspects of the housingassembly 512 and the temperature control assembly 564. Additionally,FIG. 6C also illustrates a seal housing assembly 676 that can beincluded as part of the light source assembly 510.

As illustrated in this embodiment, the housing assembly 512 can includea housing base 678A and a housing cover 678B that is secured to thehousing base 678A with a plurality of housing attachers 678C.Additionally, the housing base 678A and the housing cover 678B cancooperate to create a housing cavity 678D within which are positionedthe sets of disparate light sources 560, the optical assemblies 562, theseal housing assembly 676, and at least a portion of the temperaturecontrol assembly 564.

In certain embodiments, as shown, the housing base 678A can besubstantially flat, octagonal plate-shaped. Additionally, the housingbase 678A can include a plurality of base apertures 678E that are sizedand shaped for receiving the plurality of housing attachers 678C. In onesuch embodiment, one base aperture 678E can be positioned near eachcorner of the housing base 678A. Alternatively, the housing base 678Acan have another suitable shape.

Additionally, in this embodiment, the housing cover 678B is provided inthe form of an octagonal-shaped box top, with a size and shape thatcorresponds with the overall size and shape of the housing base 678A.Further, the housing cover 678B can include a plurality of coverapertures 678F that are sized and shaped for receiving the plurality ofhousing attachers 678C. In one such embodiment, one cover aperture 678Fcan be positioned near each corner of the housing cover 678B.Alternatively, the housing cover 678B can have another suitable design,e.g., can have another suitable shape.

The plurality of housing attachers 678C can have any suitable design forpurposes of securing the housing cover 678B to the housing base 678A.For example, in some embodiments, the plurality of housing attachers678C can be provided in the form of screws or pins that extend intoand/or through the plurality of base apertures 678E and the plurality ofcover apertures 678F. More specifically, each of the plurality of baseattachers 678C can extend into and/or through one of the base apertures678E and one of the cover apertures 678F. Alternatively, the housingbase 678A and the housing cover 678B can be secured to one another inanother suitable manner.

As noted above, the temperature control assembly 564 is configured tohelp dissipate any heat generated during use of the light sourceassembly 510, and/or to inhibit any such heat generated during use ofthe light source assembly 510 from adversely impacting any operations ofthe light source assembly 510. The temperature control assembly 564 canhave any suitable design and can include any suitable components. Forexample, in various embodiments, as shown in FIG. 6C, the temperaturecontrol assembly 564 can include a fan 664A, heat spreaders 664B (orheat sink), and one or more vents 664C. Alternatively, the temperaturecontrol assembly 564 can have a different design, i.e. can have morecomponents, fewer components or simply different components than what isshown in FIG. 6C.

As shown, the fan 664A can be positioned at least substantially withinthe housing assembly 512. The fan 664A can be selectively operated tohelp move heat away from the sets of disparate light sources 560 and/orto provide cooling air to the sets of disparate light sources 560. Insome applications, the operator of the light source assembly 510 canchoose when to activate the fan 664A. Additionally and/or alternatively,the light source assembly 510 can be designed such that the fan 664A isautomatically activated whenever the light source assembly 510 is in useor when the temperature inside the housing assembly 512 reaches acertain threshold value.

The heat spreaders 664B help to spread and/or transfer heat from thelight source assembly 510, i.e. to effectively move heat away from thesets of disparate light sources 560. More particularly, in onenon-exclusive alternative embodiment, the heat spreaders 664B cancomprise a plurality of fins that provide greater surface area for thehousing assembly 512 as a means to more effectively transfer heat awayfrom the sets of disparate light sources 560 and/or other components ofthe light source assembly 510 and into the surrounding environment. Inone embodiment, the heat spreaders 664B can be integrally formed withthe housing assembly 512. More specifically, in such embodiment, theheat spreaders 664B can be integrally formed as part of the housing base678A. Alternatively, the heat spreaders 664B can be formed independentlyof the housing assembly 512 and can be subsequently coupled to thehousing assembly 512. Still alternatively, the heat spreaders 664B canhave a different design than that shown in FIG. 6C.

In this embodiment, the one or more vents 664C can provide a passivemeans to allow heat to escape from within the housing cavity 678D. Inparticular, in the embodiment shown in FIG. 6C, the one or more vents664C can be provided in the form of a plurality of holes that are formedin the housing cover 678B. As heat is generated during the use of thelight source assembly 510, the heat will tend to rise and flow throughthe plurality of holes, i.e. the vent 664C, formed in the housing cover678B. Alternatively, the one or more vents 664C can have anothersuitable design and/or can be formed in a different part of the housingassembly 512.

The seal housing assembly 676 is configured to provide a sealedenvironment about the individual light sources 674A-674D and each of thesets of disparate light sources 560. In certain embodiments, as shown,the seal housing assembly 676 can be substantially annular-shaped andcan be positioned to substantially encircle the individual light sources674A-674D and each of the sets of disparate light sources 560. With suchdesign, the light sources 674A-674D and the sets of disparate lightsources 560 can be better protected from environmental conditions, e.g.,conditions found in a maritime environment. For example, the sealhousing assembly 676 can inhibit corrosion of the individual lightsources 674A-674D and each of the sets of disparate light sources 560,which may otherwise adversely impact the operation of the light sourceassembly 510 in some environments, e.g., in maritime environments.

FIG. 6D is a cutaway view of the portion of the light source assembly510 taken on line D-D in FIG. 6A. More specifically, FIG. 6D illustratesmore details about the design of the housing assembly 512, and thedesign and positioning of the at least two sets of disparate lightsources 560 and the temperature control assembly 564 that are coupledto, secured to and/or retained substantially within the housing assembly512.

FIG. 6E is a simplified schematic perspective view illustration ofanother portion of the light source assembly 510 illustrated in FIG. 5.In particular, FIG. 6E again shows the housing assembly 512 and the atleast two sets of disparate light sources 560, the at least two opticalassemblies 562 and the temperature control assembly 564 that are coupledto, secured to and/or retained substantially therein, but with certainportions of the housing assembly 512, i.e. the housing cover 678B,having been removed for purposes of clarity. Additionally, as notedabove, FIG. 6E also illustrates an embodiment of the individual lightsources 674A-674D that can be included as part of each of the sets ofdisparate light sources 560.

FIG. 7A is a simplified schematic perspective view illustration of aportion of another embodiment of the light source assembly 710. Thelight source assembly 710 is substantially similar to the light sourceassembly 510 illustrated and described above in relation to FIGS. 5 and6A-6E. For example, the light source assembly 710 again includes ahousing assembly 712, and at least two sets of disparate light source760, at least two optical assemblies 762 and a temperature controlassembly 764 that are somewhat similar to what was illustrated anddescribed in relation to FIGS. 5 and 6A-6E.

However, in this embodiment, the housing assembly 712 and each of theoptical assemblies 762 are slightly different than in the precedingembodiment. More particularly, in this embodiment, the housing assembly712 includes a separate housing aperture 772 for the output beams 771(illustrated in FIG. 7B) generated and/or emitted from each of theindividual light sources 674 (illustrated in FIG. 6E) for each of thesets of disparate light sources 760. Additionally, each individual lightsource 674 of each of the sets of disparate light sources 760 includesan individual optical assembly 762. Stated in another manner, eachindividual light source 674 of each of the sets of disparate lightsources 760 includes one or more lenses, mirrors, diffractive opticalelements, windows, etc. for any desired focusing, shaping and directingof the output beams 771 from each of the sets of disparate light sources760.

FIG. 7B is another simplified schematic perspective view illustration ofthe portion of the light source assembly 710 illustrated in FIG. 7A. Inparticular, FIG. 7B is a simplified schematic perspective viewillustration that shows output beams 771 that have been emitted withineach of the sets of disparate light sources 760 (illustrated in FIG. 7A)and that are being directed away from the housing assembly 712 throughthe housing apertures 772 (illustrated in FIG. 7A). More specifically,FIG. 7B illustrates (i) first output beams 771A that have been emittedfrom the first plurality of disparate light sources 760; (ii) secondoutput beams 771B that have been emitted from the second plurality ofdisparate light sources 760; (iii) third output beams 771C that havebeen emitted from the third plurality of disparate light sources 760;and (iv) fourth output beams 771D that have been emitted from the fourthplurality of disparate light sources 760. As with the previousembodiment, the output beams 771A-771B can be positioned and oriented toprovide at least nearly 360-degree coverage about and/or relative to thehousing assembly 712. With such design, the detector assembly 23(illustrated in FIG. 1A) is able to effectively capture and/or detectthe signal from the light source assembly 710 regardless of theorientation of the light source assembly 710, i.e. of the housingassembly 712, relative to the detector assembly 23, provided that thedetector assembly 23 is close enough and is pointing generally towardthe light source assembly 710. Alternatively, as noted above, the outputbeams 771A-771D from each of the sets of disparate light sources 760 canbe configured to provide less than approximately 360-degree azimuthalcoverage about and/or relative to the housing assembly 712.

FIG. 8 is a simplified schematic illustration of a maritime vehicle 880with a light source assembly 810, e.g., the light source assembly 510illustrated in FIG. 5 or the light source assembly 710 illustrated inFIG. 7A, mounted thereon. In particular, FIG. 8 illustrates the controlsystem 866 (illustrated in phantom) being positioned inside the maritimevehicle 880, and the remainder of the light source assembly 810, i.e.the housing assembly 812 and all of the components retainedsubstantially therein, mounted to an elevated external portion of themaritime vehicle 880. With such design and positioning of the lightsource assembly 810, the output beams 881 from the light source assembly810 can be easily detected by a detector assembly 23 (illustrated inFIG. 1A) regardless of the orientation of the light source assembly 810,i.e. of the housing assembly 812, relative to the detector assembly 23,provided that the detector assembly 23 is close enough and is pointinggenerally toward the light source assembly 810.

FIG. 9A is a simplified schematic perspective view illustration of aportion of still yet another embodiment of the light source assembly910. The light source assembly 910 is somewhat similar to the lightsource assembly 510 illustrated and described above in relation to FIGS.5 and 6A-6E. Accordingly, not all of the components of the light sourceassembly 910 will be described in full detail herein below.

As illustrated, the light source assembly 910 includes a housingassembly 912, a plurality of fixed beam light sources 982, a pluralityof fixed beam optical assemblies 984, a moving beam light source 986(illustrated in FIG. 9E), a moving beam optical assembly 988, and atemperature control assembly 964. In this embodiment, the plurality offixed beam light sources 982, the plurality of fixed beam opticalassemblies 984, the moving beam light source 986, the moving beamoptical assembly 988, and the temperature control assembly 964 can becoupled to, secured to and/or retained substantially within the housingassembly 912.

It is appreciated that the light source assembly 910 can be used for anysuitable applications. In particular, the light source assembly 910 canbe utilized in conjunction with a detector assembly 23 (illustrated inFIG. 1A) for various purposes such as search and rescue, identification(e.g., of friend or foe), surveillance, targeting, and/or navigation,both on land and/or in a maritime environment. In one non-exclusiveapplication, the light source assembly 910 can be coupled to, secured toand/or mounted on a maritime vehicle 880 (illustrated in FIG. 8).Alternatively, in other non-exclusive applications, the light sourceassembly 910 can be coupled to, secured to and/or mounted on anothertype of vehicle. Still alternatively, the light source assembly 910 canbe used for other suitable applications.

Additionally, it is appreciated that the light source assembly 910 canfurther include a control system, e.g., such as the control system 566(illustrated in FIG. 5). In particular, in certain embodiments, thecontrol system can include components such as the controller 518(illustrated in FIG. 5), the power source 520 (illustrated in FIG. 5)and the selector assembly 522 (illustrated in FIG. 5), such as describedin detail above. More specifically, in such embodiments, the lightsource assembly 910 can include a control system that is electricallyconnected to, but is spaced apart from and positioned remotely from thehousing assembly 912, and the plurality of fixed beam light sources 982,the plurality of fixed beam optical assemblies 984, the moving beamlight source 986, the moving beam optical assembly 988, and thetemperature control assembly 964 that are coupled to, secured to and/orretained substantially therein. Additionally, or in the alternative, insome embodiments, at least a portion of the control system can bemaintained within the housing assembly 912.

As above, the control system 566 enables the necessary and desiredcontrol of the operation of the light source assembly 910. Morespecifically, in various embodiments, the controller 518 enables theselective operation of one or more of the fixed beam light sources 982and/or the moving beam light source 986, by selectively controlling theelectrical power that is provided by the power source 520 to the lightsources 982, 986. In certain applications, the controller 518 caninclude one or more processors and circuits that are electricallyconnected to the selector assembly 522, and can selectively directcurrent from the power source 520 to one or more of the fixed beam lightsources 982 and/or the moving beam light source 986 based on theparticular selections made by the operator via the selector assembly522. Additionally, each of the fixed beam light sources 982 and/or themoving beam light source 986 can be operated in a pulsed mode ofoperation (and with any desired duty cycle) to minimize heat generationin, and power consumption by the fixed beam light sources 982 and/or themoving beam light source 986. Alternatively, one or more of the fixedbeam light sources 982 and/or the moving beam light source 986 can beoperated in a continuous wave mode of operation. Moreover, in certainembodiments, the control system 566 can control the rotation rate of themoving beam light source 986.

The design of the power source 520 can be varied. In certainembodiments, the power source 520 provides the necessary and desiredelectrical power to effectively and efficiently operate the light sourceassembly 910, e.g., to selectively activate and control one or more ofthe fixed beam light sources 982 and/or the moving beam light source986. In alternative embodiments, the power source 520 can include anexternal generator, an internal generator and/or one or more batteries.Additionally, as shown in FIG. 9A, the light source assembly 910 caninclude an electrical connector 990 for purposes of connecting to thepower source 520.

Further, as above, the selector assembly 522 can include one or moreswitches and/or one or more dials that are each electrically connectedto the controller 518 to enable the user to selectively choose between avariety of potential modes of operation for the light source assembly910 via the plurality of selector settings 529.

The housing assembly 912 can be any suitable size and shape for purposesof providing a housing for the plurality of fixed beam light sources982, the plurality of fixed beam fixed beam optical assemblies 984, themoving beam light source 986, the moving beam optical assembly 988, andthe temperature control assembly 964. As illustrated in this embodiment,the housing assembly 912 can include a housing body 978A and a housingcover 978B that is sealingly secured to the housing body 978A with aplurality of housing attachers 978C, e.g., screws or other suitableattachers. Additionally, the housing body 978A and the housing cover978B can cooperate to create a sealed housing cavity 978D (illustratedin FIG. 9E) within which are positioned the plurality of fixed beamlight sources 982, the plurality of fixed beam optical assemblies 984,the moving beam light source 986, the moving beam optical assembly 988,at least a portion of the temperature control assembly 964, and othercomponents of the light source assembly 910. It is appreciated that thesealed housing cavity 978D can inhibit corrosion of the fixed beam lightsources 982 and the moving beam light source 986, which may otherwiseadversely impact the operation of the light source assembly 910 in someenvironments, e.g., in maritime environments.

In certain embodiments, as shown, the housing body 978A can besubstantially cylinder-shaped. Additionally, in this embodiment, thehousing cover 978B is provided in the general form of a six-sided dome,with a flange 978E that is configured to be coupled to the housing body978A, i.e. with the plurality of housing attachers 978C. As shown, thehousing cover 978B can further include a cover cap 978F that extendsupwardly from and is sealingly coupled to a substantially flat uppersurface 978G of the housing cover 978B. Additionally, in one embodiment,the cover cap 978F can include an angled window 978H that extendsgenerally upwardly at an angle from the upper surface 978G for a fullthree hundred sixth degrees, which is then covered at a top side with anupper cap member 9781. Alternatively, the housing body 978A and/or thehousing cover 978B can have other suitable designs, e.g., can have othersuitable shapes. For example, in some non-exclusive alternativeembodiments, the housing cover 978B can be generally dome-shaped havingmore than six or fewer than six sides, and/or the cover cap 978F caninclude a substantially dome-shaped window.

FIG. 9B is another simplified schematic perspective view illustration ofthe portion of the light source assembly 910 illustrated in FIG. 9A. Asprovided herein, in this embodiment, the light source assembly 910 caninclude any suitable number of fixed beam light sources 982 that areeach configured to generate a fixed beam output (light) beam 991(sometimes referred to as a “fixed output beam”) that is directed in adifferent general axial direction, i.e. along and about a differentcentral beam axis 992 away from the housing assembly 912. For example,in one embodiment, the light source assembly 910 can be configured toinclude six fixed beam light sources 982 that are each configured togenerate a fixed output beam 991 that is directed in a different generalaxial direction. Alternatively, the light source assembly 910 can beconfigured to include three, four, five, seven, eight, or anothersuitable number of fixed beam light sources 982.

Additionally, the general axial direction that the fixed output beams991 are directed for each of the fixed beam light sources 982 can besubstantially evenly radially and/or angularly spaced apart about thehousing assembly 912. Stated in another manner, in such embodiments, thecentral beam axes 992 can be substantially evenly radially and/orangularly spaced apart from one another. More particularly, in thisembodiment that includes six fixed beam light sources 982, the generalaxial direction that the fixed output beam 991 is directed for each ofthe fixed beam light sources 982 can be approximately sixty degrees fromthe general axial direction of the fixed output beam 991 of adjacentfixed beam light sources 982. Stated in another manner, each of thecentral beam axes 992 for each of the fixed output beams 991 can bespaced approximately sixty degrees from each adjacent central beam axis992. Alternatively, in embodiments that contain a different number offixed beam light sources 982, the central beam axes 992 can be orientedand/or spaced apart at least approximately forty-five degrees,seventy-two degrees, ninety degrees, or one hundred twenty degrees fromany adjacent central beam axes 992. More particularly, it is appreciatedthat the axial spacing between the central beam axes 992 for each of thefixed beam light sources 982 will vary depending on the total number offixed beam light sources 982. Additionally, it is further appreciatedthat in different embodiments and applications, the fixed beam lightsources 982, and the fixed output beams 991 generated therefrom, neednot be evenly spaced apart from one another.

In the illustrated embodiment, i.e. with six fixed beam light sources982 and six corresponding fixed output beams 991, it is possible thatthe light source assembly 910 can generate fixed output beams 991 thatoverlap adjacent fixed output beams 991 to provide substantially360-degree azimuthal coverage about and/or relative to the housingassembly 912. Stated in another manner, in such embodiments, the fixedoutput beams 991 can be detectable, i.e. by a suitable detector assembly23 (illustrated in FIG. 1A), in any and all azimuthal directionsrelative to the housing assembly 912 provided that the detector assembly23 is close enough and is pointing generally toward the light sourceassembly 910. Alternatively, in other embodiments, the light sourceassembly 910 can generate fixed output beams 991 that provide less than360-degree azimuthal coverage about and/or relative to the housingassembly 912.

Additionally, not each of the plurality of fixed beam light sources 982need to be activated or operational at any given time, and the pluralityof fixed beam light sources 982 need not provide approximately360-degree azimuthal coverage about and/or relative to the housingassembly 912. For example, in certain non-exclusive alternativeembodiments, one or more of the plurality of fixed beam light sources982 can be activated or operated at any given time so as to provide atleast approximately 180-degree, 210-degree, 240-degree, 270-degree,300-degree, 330-degree or 360-degree azimuthal coverage about and/orrelative to the housing assembly 912.

In one embodiment, each of the fixed beam light sources 982 can beconfigured to generate a fixed output beam 991 having a ninety degreedivergent cone of light. In such embodiment, the fixed output beam 991can be directed to cover approximately negative ten degrees to eightydegrees elevation as it is directed away from the housing assembly 912.Alternatively, each of the fixed beam light sources 982 can generate adifferent size fixed output beam 991 and/or cover a different elevationrange as it is directed away from the housing assembly 912.

Additionally, the fixed beam light sources 982 can have any suitabledesign. For example, in some embodiments, each of the fixed beam lightsources 982 can be an LED light source. Alternatively, one or more ofthe fixed beam light sources 982 can have a different design. Forexample, one or more of the fixed beam light sources 982 can be a laserlight source, or another suitable type of light source.

Further, each of the fixed beam light sources 982 can be designed and/orindividually tuned to provide a fixed output beam 991 having a specificwavelength. For example, in some embodiments, each of the fixed beamlight sources 982 can be configured to generate fixed output beams 991having a center wavelength that is outside of the visible light spectrumof between approximately three hundred eighty and seven hundrednanometers, e.g., the fixed output beams 991 can have a centerwavelength that is in the infrared light spectrum or the ultravioletlight spectrum. Thus, in such embodiments, the fixed beam light sources982 may be referred to as “non-visible light sources”.

In one non-exclusive alternative embodiment, each of the fixed beamlight sources 982 can be a near-infrared light source that generatesand/or emits a fixed output beam 991 having a center wavelength that isin a near-infrared wavelength range of between approximately sevenhundred nanometers (i.e. 0.70 micrometers) and one point four (1.4)micrometers. Alternatively, one or more of the fixed beam light sources982 can be (i) a long-wavelength infrared light source that generatesand/or emits a fixed output beam 991 having a center wavelength that isin a long-wavelength infrared range of between approximately eightmicrometers and fifteen micrometers; (ii) a mid-wavelength infraredlight source that generates and/or emits a fixed output beam 991 havinga center wavelength that is in a mid-wavelength infrared range ofbetween approximately three micrometers and eight micrometers; and/or(iii) a short-wavelength infrared light source that generates and/oremits a fixed output beam 991 having a center wavelength that is in ashort-wavelength infrared range of between approximately one point four(1.4) micrometers and three micrometers. Still alternatively, one ormore of the fixed beam light sources 982 can be different than thosespecifically identified herein above (e.g., the fixed beam light sources982 can have different wavelengths such as those for a far-infraredlight source, an ultraviolet light source, an X-ray light source, avisible light source, or another appropriate light source).

Additionally, as shown, the housing assembly 912 can include a pluralityof housing apertures 972 that are spaced apart from one another about aperimeter of the housing assembly 912. For example, in this embodiment,a housing aperture 972 can extend through every side of the six-sideddome housing cover 978B of the housing assembly 912. More particularly,in this embodiment, the housing assembly 912 includes six housingapertures 972, with one housing aperture 972 being positionedsubstantially adjacent to each of the plurality of fixed beam lightsources 982. The housing apertures 972 provide a means through which thefixed output beams 991 that are generated by the fixed beam lightsources 982 can be directed out of and away from the housing assembly912.

Returning briefly to FIG. 9A, each of the plurality of fixed beam lightsources 982 has a corresponding fixed beam optical assembly 984. Asabove, the fixed beam optical assemblies 984 can be provided to enableany desired focusing, shaping and directing of the fixed output beams991 (illustrated in FIG. 9B) from each fixed beam light source 982. Forexample, in certain embodiments, each fixed beam optical assembly 984can include one or more optical elements 984A, e.g., one or more lenses,mirrors, diffractive optical elements and/or other optical elements, toenable any desired focusing, shaping and directing of the fixed outputbeams 991 from each fixed beam light source 982. Additionally and/oralternatively, the one or more optical elements 984A of each fixed beamoptical assembly 984 can include a window designed such that the fixedoutput beams 991 are not collimated, i.e. are uncollimated. Stillalternatively, one or more of the output beams 991 can be directed awayfrom the housing assembly 912 without the need for any optical elements.

FIG. 9C is still another simplified schematic perspective viewillustration of the portion of the light source assembly 910 illustratedin FIG. 9A. In this embodiment, the moving beam light source 986(illustrated in FIG. 9E) is configured to generate a moving beam output(light) beam 993 (sometimes referred to as a “moving output beam”) thatis directed away from the housing assembly 912, e.g., through the angledwindow 978H of the cover cap 978F. More particularly, as providedherein, due to the unique design of the moving beam optical assembly988, the moving output beam 993 from the moving beam light source 986 isconfigured to move, e.g., rotate as shown by arrow 994, about a rotationaxis 995 as it is directed away from the housing assembly 912 at anangle relative to the rotation axis 995. Additionally, in someembodiments, the rotation axis 995 can be substantially coaxial withand/or substantially parallel to a housing axis 912X of the housingassembly 912. In one such embodiment, the housing axis 912X can bedefined as the axis that is directed substantially vertically through acenter of the substantially symmetrical housing assembly 912.Alternatively, the rotation axis 995 need not be substantially coaxialwith and/or substantially parallel to the housing axis 912X.

In one embodiment, the moving output beam 993 can be directed to coverapproximately negative ten degrees to seventy degrees elevation as it isdirected away from the housing assembly 912. Stated in another manner,the moving output beam 993 is directed away from the housing assembly912 to cover an angle of between approximately twenty degrees and onehundred degrees relative to the rotation axis 995. Additionally, in suchembodiment, a central beam axis 993X of the moving output beam 993 canbe directed away from the housing assembly 912 through the angled window978H at a beam angle 993A of between approximately forty degrees andsixty degrees relative to the rotation axis 995. In one non-exclusiveembodiment, the central beam axis 993X of the moving output beam 993 isdirected away from the housing assembly 912 through the angled window978H at a beam angle 993A of approximately fifty degrees relative to therotation axis 995. Alternatively, the moving output beam 993 can cover adifferent elevation range as it is directed away from the housingassembly 912 and/or the central beam axis 993X of the moving output beam993 can be directed away from the housing assembly 912 through theangled window 978H at a different beam angle 993A relative to therotation axis 995.

Jumping ahead briefly to FIG. 9E, FIG. 9E is a cutaway view of theportion of the light source assembly taken on line E-E in FIG. 9D. Morespecifically, FIG. 9E illustrates more details about the design of thehousing assembly 912, and the design and positioning of the plurality offixed beam light sources 982, the moving beam light source 986 and thetemperature control assembly 964 that are coupled to, secured to and/orretained substantially within the housing assembly 912.

The moving beam light source 986 can have any suitable design. Forexample, in some embodiments, the moving beam light source 986 can be alaser light source, e.g., a QC laser light source such as is describedin greater detail herein above. Alternatively, the moving beam lightsource 986 can have a different design. For example, the moving beamlight source 986 can be an LED light source, or another suitable type oflight source.

Further, the moving beam light source 986 can be designed and/or tunedto provide a moving output beam 993 (illustrated in FIG. 9C) having aspecific wavelength. For example, in some embodiments, the moving beamlight source 986 can be configured to generate a moving output beam 993having a center wavelength that is outside of the visible light spectrumof between approximately three hundred eighty and seven hundrednanometers, e.g., the moving output beam 993 can have a centerwavelength that is in the infrared light spectrum or the ultravioletlight spectrum. Thus, in such embodiments, the moving beam light source986 may be referred to as “non-visible light source”.

In one non-exclusive alternative embodiment, the moving beam lightsource 986 can be a mid-wavelength infrared light source that generatesand/or emits a moving output beam 993 having a center wavelength that isin a mid-wavelength infrared range of between approximately threemicrometers and eight micrometers. Alternatively, the moving beam lightsource 986 can be (i) a long-wavelength infrared light source thatgenerates and/or emits a moving output beam 993 having a centerwavelength that is in a long-wavelength infrared range of betweenapproximately eight micrometers and fifteen micrometers; (ii) ashort-wavelength infrared light source that generates and/or emits amoving output beam 993 having a center wavelength that is in ashort-wavelength infrared range of between approximately one point four(1.4) micrometers and three micrometers; and/or (iii) a near-infraredlight source that generates and/or emits a moving output beam 993 havinga center wavelength that is in a near-infrared wavelength range ofbetween approximately seven hundred nanometers (i.e. 0.70 micrometers)and one point four (1.4) micrometers. Still alternatively, the movingbeam light source 986 can be different than those specificallyidentified herein above (e.g., the moving beam light source 986 can havea different wavelength such as that for a far-infrared light source, anultraviolet light source, an X-ray light source, a visible light source,or another appropriate light source).

The moving beam optical assembly 988 can be provided to enable anydesired focusing, shaping and directing of the moving output beam 993from the moving beam light source 986. For example, in certainembodiments, the moving beam optical assembly 988 can include one ormore optical elements 988A, e.g., one or more lenses, mirrors,diffractive optical elements and/or other optical elements, to enableany desired focusing, shaping and directing of the moving output beam993 from the moving beam light source 986. Additionally and/oralternatively, the one or more optical elements 988A of the moving beamoptical assembly 988 can include a window, e.g., the angled window 978H,designed such that the moving output beams 993 is not collimated, i.e.is uncollimated.

Further, as shown, the moving beam optical assembly 988 also includes amovable, e.g., rotatable, optical element 988B, that enables the movingoutput beam 993 to rotate about the rotation axis 995. For example, insome embodiments, the movable optical element 988B can be a reflectivesurface that is angled relative to the rotation axis 995 and that ismoved, e.g., rotated, by a mover 996 about the rotation axis 995. Moreparticularly, in certain such embodiments, the movable optical element988B can be a mirror that is angled at between approximately twentydegrees and thirty degrees relative to the rotation axis 995 and that isrotated with the mover 996. Alternatively, the movable optical element988B can have another suitable design.

As shown, the mover 996 includes a mover shaft 997 that is orientedsubstantially along and/or parallel to the rotation axis 995.Additionally, in certain embodiments, the mover shaft 997 can be ahollow shaft that defines a shaft cavity 998.

During use of the moving beam light source 986, the moving beam lightsource 986 initially directs a source output beam 999 generally alongand/or parallel to the rotation axis 995, which, as noted, can besubstantially coaxial with and/or substantially parallel to the housingaxis 912X, such that the source output beam 999 is directed through theshaft cavity 998. After going through the shaft cavity 998, the sourceoutput beam 999 impinges on the movable optical element 988A, whichredirects the source output beam 999 as the moving output beam 993outwardly at an angle away from the housing assembly 912. Further, asthe mover 996 rotates about the mover shaft 997, the mover 996 rotatesthe movable optical element 988A so that the direction of the movingoutput beam 993 away from the housing assembly 912 changes. With suchdesign, the moving output beam 993 can be rotated a full 360-degreesabout the rotation axis 995 as the moving output beam 993 is directedaway from the housing assembly 912.

In one embodiment, the one or more optical elements 988A of the movingbeam optical assembly 988 can include (i) an optical element that ispositioned in the beam path of the source output beam 999 prior to thesource output beam 999 impinging on the movable optical element 988B,and (ii) an optical element that is positioned in the beam path of themoving output beam 993 between the movable optical element 988B and theangled window 978H through which the moving output beam 993 is directedaway from the housing assembly 912. Additionally, in some embodiments,the one or more optical elements 988A can include a negative lens and/ora diffractive optical element for purposes of shaping the moving outputbeam 993, e.g., converting a Gaussian beam to a flat top, as the movingoutput beam 993 is directed away from the housing assembly 912, e.g.,through the angled window 978H.

Additionally, it is appreciated that with the source output beam 999being directed through the shaft cavity 998 of the mover shaft 997, thelight source assembly 910 can have a much more compact design.

Returning once again back to FIG. 9A, the temperature control assembly964 is configured to control the heat that can be generated through theuse of the light source assembly 910. More specifically, in variousembodiments, the temperature control assembly 964 is configured to helpdissipate any heat generated during use of the light source assembly910, and/or to inhibit any such heat generated during use of the lightsource assembly 910 from adversely impacting any operations of the lightsource assembly 910.

The temperature control assembly 964 can have any suitable design andcan include any suitable components. For example, in variousembodiments, the temperature control assembly 964 can include a fan 964A(illustrated in FIG. 9E), heat spreaders 964B (or heat sink), and one ormore vents 964C. Alternatively, the temperature control assembly 964 canhave a different design, i.e. can have more components, fewer componentsor simply different components than what is shown in the Figures.

As shown, the fan 964A can be positioned at least substantially withinthe housing assembly 912. The fan 964A can be selectively operated tohelp move heat away from the fixed beam light sources 982 and/or themoving beam light source 986, and/or to provide cooling air to the fixedbeam light sources 982 and/or the moving beam light source 986. In someapplications, the operator of the light source assembly 910 can choosewhen to activate the fan 964A. Additionally and/or alternatively, thelight source assembly 910 can be designed such that the fan 964A isautomatically activated whenever the light source assembly 910 is in useor when the temperature inside the housing assembly 912 reaches acertain threshold value.

The heat spreaders 964B help to spread and/or transfer heat from thelight source assembly 910, i.e. to effectively move heat away from thefixed beam light sources 982 and/or the moving beam light source 986.More particularly, in one non-exclusive alternative embodiment, the heatspreaders 964B can comprise a plurality of fins that provide greatersurface area for the housing assembly 912 as a means to more effectivelytransfer heat away from the fixed beam light sources 982 and/or themoving beam light source 986, and/or other components of the lightsource assembly 910 and into the surrounding environment. In oneembodiment, the heat spreaders 964B can be integrally formed with thehousing assembly 912. More specifically, in such embodiment, the heatspreaders 964B can be integrally formed as part of the housing body978A. Alternatively, the heat spreaders 964B can be formed independentlyof the housing assembly 912 and can be subsequently coupled to thehousing assembly 912. Still alternatively, the heat spreaders 964B canhave a different design than that shown in FIG. 9A.

In this embodiment, the one or more vents 964C can provide a passivemeans to allow heat to escape from within the housing cavity 978D. Inparticular, the one or more vents 964C can be provided in the form of aplurality of holes that are formed in the housing body 978A. As heat isgenerated during the use of the light source assembly 910, the heat willtend to flow through the plurality of holes, i.e. the vent 964C, formedin the housing body 978A. Alternatively, the one or more vents 964C canhave another suitable design and/or can be formed in a different part ofthe housing assembly 912.

FIG. 9D is a simplified schematic top view illustration of the portionof the light source assembly 910 illustrated in FIG. 9A.

It is understood that although a number of different embodiments of alight source assembly have been illustrated and described herein, one ormore features of any one embodiment can be combined with one or morefeatures of one or more of the other embodiments, provided that suchcombination satisfies the intent of the present invention.

While a number of exemplary aspects and embodiments of a light sourceassembly have been discussed above, those of skill in the art willrecognize certain modifications, permutations, additions andsub-combinations thereof. It is therefore intended that the followingappended claims and claims hereafter introduced are interpreted toinclude all such modifications, permutations, additions andsub-combinations as are within their true spirit and scope.

What is claimed is:
 1. A light source assembly for use by a user, thelight source assembly comprising: a housing assembly; and a moving beamlight source that is positioned substantially within the housingassembly, the moving beam light source generating a source output beamthat is directed away from the housing assembly at an angle relative toa rotation axis as a moving output beam while being rotated about therotation axis, the moving beam light source being a non-visible lightsource that generates the source output beam having a center wavelengththat is outside a visible light spectrum; and wherein the moving beamlight source is a mid-wavelength infrared light source that generatesthe source output beam so that the center wavelength of the sourceoutput beam is within a mid-wavelength infrared range of betweenapproximately three micrometers and eight micrometers.
 2. The lightsource assembly of claim 1 wherein the housing assembly includes ahousing axis; and wherein the rotation axis is substantially parallel tothe housing axis.
 3. The light source assembly of claim 1 furthercomprising a temperature control assembly that is coupled to the housingassembly, the temperature control assembly being configured to dissipateheat that is generated during use of the light source assembly.
 4. Alight source assembly for use by a user, the light source assemblycomprising: a housing assembly; a moving beam light source that ispositioned substantially within the housing assembly, the moving beamlight source generating a source output beam that is directed away fromthe housing assembly at an angle relative to a rotation axis as a movingoutput beam while being rotated about the rotation axis, the moving beamlight source being a non-visible light source that generates the sourceoutput beam having a center wavelength that is outside a visible lightspectrum; and a moving beam optical assembly including a movable opticalelement that is moved by a mover to rotate about the rotation axis, thesource output beam impinging on the movable optical element so that themoving output beam is directed away from the housing assembly at anangle relative to the rotation axis while being rotated about therotation axis.
 5. The light source assembly of claim 4 wherein themoving beam light source is an infrared light source that generates thesource output beam so that the center wavelength of the source outputbeam is within an infrared light spectrum.
 6. The light source assemblyof claim 4 wherein the mover includes a mover shaft that defines a shaftcavity therein; and wherein the source output beam is directed from themoving beam light source through the shaft cavity before the sourceoutput beam impinges on the movable optical element.
 7. A light sourceassembly for use by a user, the light source assembly comprising: ahousing assembly; a moving beam light source that is positionedsubstantially within the housing assembly, the moving beam light sourcegenerating a source output beam that is directed away from the housingassembly at an angle relative to a rotation axis as a moving output beamwhile being rotated about the rotation axis, the moving beam lightsource being a non-visible light source that generates the source outputbeam having a center wavelength that is outside a visible lightspectrum; and a plurality of fixed beam light sources that each generatea fixed output beam that is directed away from the housing assembly in adifferent axial direction.
 8. The light source assembly of claim 7wherein each fixed output beam is angularly spaced apart from adjacentfixed output beams by at least approximately sixty degrees.
 9. The lightsource assembly of claim 7 wherein each of the plurality of fixed beamlight sources is a non-visible light source that generates the fixedoutput beam having a center wavelength that is outside a visible lightspectrum of between approximately three hundred eighty and seven hundrednanometers.
 10. The light source assembly of claim 7 wherein at leastone of the plurality of fixed beam light sources is an infrared lightsource that generates the fixed output beam so that the centerwavelength of the moving output beam is within an infrared lightspectrum.
 11. The light source assembly of claim 7 wherein at least oneof the plurality of fixed beam light sources is near-wavelength infraredlight source that generates the fixed output beam so that the centerwavelength of the fixed output beam is within a near-wavelength infraredrange of between approximately seven hundred nanometers and one pointfour micrometers.
 12. A light source assembly for use by a user, thelight source assembly comprising: a housing assembly; a moving beamlight source that is positioned substantially within the housingassembly, the moving beam light source generating a source output beamthat is directed away from the housing assembly at an angle relative toa rotation axis as a moving output beam while being rotated about therotation axis; a moving beam optical assembly including a movableoptical element that is configured to rotate about the rotation axis,the source output beam impinging on the movable optical element so thatthe moving output beam is directed away from the housing assembly at anangle relative to the rotation axis while being rotated about therotation axis; and a mover that rotates the movable optical elementabout the rotation axis, the mover including a mover shaft that definesa shaft cavity therein; and wherein the source output beam is directedfrom the moving beam light source through the shaft cavity before thesource output beam impinges on the movable optical element.
 13. Thelight source assembly of claim 12 wherein the moving beam light sourceis an infrared light source that generates the moving output beam sothat a center wavelength of the moving output beam is within an infraredlight spectrum.
 14. The light source assembly of claim 12 furthercomprising a plurality of fixed beam light sources that each generate afixed output beam that is directed away from the housing assembly in adifferent axial direction.
 15. The light source assembly of claim 14wherein each fixed output beam is angularly spaced apart from adjacentfixed output beams by at least approximately sixty degrees.
 16. Thelight source assembly of claim 14 wherein each of the plurality of fixedbeam light sources is a non-visible light source that generates thefixed output beam having a center wavelength that is outside a visiblelight spectrum of between approximately three hundred eighty and sevenhundred nanometers.
 17. The light source assembly of claim 14 wherein atleast one of the plurality of fixed beam light sources is an infraredlight source that generates the fixed output beam so that the centerwavelength of the moving output beam is within an infrared lightspectrum.
 18. The light source assembly of claim 12 further comprising atemperature control assembly that is coupled to the housing assembly,the temperature control assembly being configured to dissipate heat thatis generated during use of the light source assembly.
 19. A light sourceassembly for use by a user, the light source assembly comprising: ahousing assembly; a first set of disparate light sources that is coupledto the housing assembly; a second set of disparate light sources that iscoupled to the housing assembly; and a moving beam light source that ispositioned substantially within the housing assembly, the moving beamlight source generating a source output beam that is directed away fromthe housing assembly at an angle relative to a rotation axis as a movingoutput beam while being rotated about the rotation axis, the moving beamlight source being a non-visible light source that generates the sourceoutput beam having a center wavelength that is outside a visible lightspectrum; wherein each of the sets of disparate light sources includes afirst light source that is configured to generate a first light beamhaving a first center wavelength and a second light source that isconfigured to generate a second light beam having a second centerwavelength that is different than the first center wavelength; whereinthe first set of disparate light sources generates at least one firstoutput beam that is directed away from the housing assembly along andabout a first central beam axis; and wherein the second set of disparatelight sources generates at least one second output beam that is directedaway from the housing assembly along and about a second central beamaxis; wherein the first central beam axis is angularly spaced apart fromthe second central beam axis.
 20. The light source assembly of claim 19wherein the first central beam axis is angularly spaced apart from thesecond central beam axis by at least approximately forty-five degrees.21. The light source assembly of claim 19 wherein the at least two setsof disparate light sources further includes a third plurality ofdisparate light sources; wherein the third plurality of disparate lightsources generates at least one third output beam that is directed awayfrom the housing assembly along and about a third central beam axis; andwherein the third central beam axis is angularly spaced apart from eachof the first central beam axis and the second central beam axis.
 22. Thelight source assembly of claim 21 wherein the at least two sets ofdisparate light sources further includes a fourth plurality of disparatelight sources; wherein the fourth plurality of disparate light sourcesgenerates at least one fourth output beam that is directed away from thehousing assembly along and about a fourth central beam axis; and whereinthe fourth central beam axis is angularly spaced apart from each of thefirst central beam axis, the second central beam axis and the thirdcentral beam axis.
 23. The light source assembly of claim 22 wherein theat least one first output beam, the at least one second output beam, theat least one third output beam, and the at least one fourth output beamprovide approximately 360-degree azimuthal coverage about the housingassembly.
 24. A light source assembly for use by a user, the lightsource assembly comprising: a housing assembly; and a moving beam lightsource that is positioned substantially within the housing assembly, themoving beam light source generating a source output beam that isdirected away from the housing assembly at an angle relative to arotation axis as a moving output beam while being rotated about therotation axis, the moving beam light source including one of (i) amid-wavelength infrared light source that generates the source outputbeam so that the center wavelength of the source output beam is within amid-wavelength infrared range of between approximately three micrometersand eight micrometers; and (ii) a long-wavelength infrared light sourcethat generates the source output beam so that the center wavelength ofthe source output beam is within a long-wavelength infrared range ofbetween approximately eight micrometers and fifteen micrometers.